`mc-java` fails to compile messages that have fields named after Java keywords

The following message doesn't compile:

```proto
message NumericBound {
    oneof value {
        float float = 1;
        double double = 2;
    }
}
```

`float`, `double` and probably other Java keywords are valid Protobuf identifiers. But a Java method cannot be named after a Java keyword (in this example, `public io.spine.base.EventMessageField float()` is generated). So, the compilation fails.

<details>
<summary>Log from `lauchProtoData` task</summary>

```
> Task :proto:context:launchProtoData
Mar 18, 2025 3:56:22 PM io.spine.protodata.java.render.MessageAction render
SEVERE:                 Caught exception while applying `CreateNestedClass(type=name {
  simple_name: "RangeFieldDiscovered"
  package_name: "spine.validation"
  type_url_prefix: "type.spine.io"
}
file {
  path: "/Users/yevhenii/Projects/Spine/validation-master/proto/context/src/main/proto/spine/validation/events.proto"
}
field {
  name {
    value: "id"
  }
  type {
    message {
      simple_name: "FieldRef"
      package_name: "spine.protodata"
      type_url_prefix: "type.spine.io"
    }
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 1
  doc {
  }
  span {
    start_line: 144
    start_column: 5
    end_line: 144
    end_column: 31
  }
}
field {
  name {
    value: "subject"
  }
  type {
    message {
      simple_name: "Field"
      package_name: "spine.protodata"
      type_url_prefix: "type.spine.io"
    }
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 2
  order_of_declaration: 1
  doc {
    leading_comment: "The field in which the option was discovered."
  }
  span {
    start_line: 147
    start_column: 5
    end_line: 147
    end_column: 33
  }
}
field {
  name {
    value: "error_message"
  }
  type {
    primitive: TYPE_STRING
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 3
  order_of_declaration: 2
  doc {
    leading_comment: "The error message template."
  }
  span {
    start_line: 150
    start_column: 5
    end_line: 150
    end_column: 30
  }
}
field {
  name {
    value: "range"
  }
  type {
    primitive: TYPE_STRING
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 4
  order_of_declaration: 3
  doc {
    leading_comment: "The range value."
  }
  span {
    start_line: 153
    start_column: 5
    end_line: 153
    end_column: 22
  }
}
field {
  name {
    value: "lower_bound"
  }
  type {
    message {
      simple_name: "NumericBound"
      package_name: "spine.validation"
      type_url_prefix: "type.spine.io"
    }
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 5
  order_of_declaration: 4
  doc {
    leading_comment: "The minimum value that a numeric field can have."
  }
  span {
    start_line: 156
    start_column: 5
    end_line: 156
    end_column: 51
  }
}
field {
  name {
    value: "upper_bound"
  }
  type {
    message {
      simple_name: "NumericBound"
      package_name: "spine.validation"
      type_url_prefix: "type.spine.io"
    }
  }
  declaring_type {
    simple_name: "RangeFieldDiscovered"
    package_name: "spine.validation"
    type_url_prefix: "type.spine.io"
  }
  number: 6
  order_of_declaration: 5
  doc {
    leading_comment: "The maximum value that a numeric field can have."
  }
  span {
    start_line: 159
    start_column: 5
    end_line: 159
    end_column: 51
  }
}
doc {
  leading_comment: "The event emitted whenever a field with `(range)` option is discovered\nand has passed the necessary checks to confirm the option is applied correctly."
}
span {
  start_line: 142
  start_column: 1
  end_line: 160
  end_column: 2
}
, file=io/spine/validation/event/RangeFieldDiscovered.java, simpleName="Field")`.
                Message: Incorrect method 'public io.spine.base.EventMessageField float() {
    return new io.spine.base.EventMessageField(getField().nested("float"));                
}  '.                                
com.intellij.util.IncorrectOperationException: Incorrect method 'public io.spine.base.EventMessageField float() {
    return new io.spine.base.EventMessageField(getField().nested("float"));                
}  '
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.newException(PsiJavaParserFacadeImpl.java:388)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:184)
        at com.intellij.psi.impl.PsiElementFactoryImpl.createMethodFromText(PsiElementFactoryImpl.java:684)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:193)
        at io.spine.tools.psi.java.PsiElementFactoryDecorator.createMethodFromText(PsiElementFactoryDecorator.kt:126)
        at io.spine.tools.mc.java.field.FieldAccessor.method$mc_java_base(FieldAccessors.kt:86)
        at io.spine.tools.mc.java.field.MessageTypedField.addFieldMethods(MessageTypedField.kt:140)
        at io.spine.tools.mc.java.field.MessageTypedField.createClass$mc_java_base(MessageTypedField.kt:106)
        at io.spine.tools.mc.java.field.AddFieldClass.addFieldClasses(AddFieldClass.kt:103)
        at io.spine.tools.mc.java.field.AddFieldClass.tuneClass(AddFieldClass.kt:89)
        at io.spine.protodata.java.render.CreateNestedClass.doRender(CreateNestedClass.kt:108)
        at io.spine.protodata.java.render.MessageAction.render(MessageAction.kt:99)
        at io.spine.protodata.java.render.RenderActions.apply(RenderActions.kt:62)
        at io.spine.tools.mc.java.signal.SignalRenderer.doRender$lambda$0(Renderers.kt:64)
        at io.spine.tools.psi.java.PsiCommandsKt.execute$lambda$0(PsiCommands.kt:59)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:219)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:174)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:164)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:150)
        at io.spine.tools.psi.java.PsiCommandsKt.execute(PsiCommands.kt:64)
        at io.spine.tools.psi.java.PsiCommandsKt.execute$default(PsiCommands.kt:55)
        at io.spine.tools.mc.java.signal.SignalRenderer.doRender(Renderers.kt:63)
        at io.spine.protodata.java.render.TypeListRenderer.doRender(TypeListRenderer.kt:63)
        at io.spine.protodata.java.render.AbstractRenderer.render(AbstractRenderer.kt:114)
        at io.spine.protodata.render.Renderer.renderSources(Renderer.kt:51)
        at io.spine.protodata.plugin.PluginKt.render(Plugin.kt:133)
        at io.spine.protodata.backend.Pipeline.renderSources(Pipeline.kt:303)
        at io.spine.protodata.backend.Pipeline.emitEventsAndRenderSources(Pipeline.kt:274)
        at io.spine.protodata.backend.Pipeline.invoke(Pipeline.kt:253)
        at io.spine.protodata.backend.Pipeline.invoke$default(Pipeline.kt:241)
        at io.spine.protodata.cli.app.Run.doRun(Main.kt:137)
        at io.spine.protodata.cli.app.Run.run(Main.kt:124)
        at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:198)
        at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:18)
        at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:400)
        at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:397)
        at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:415)
        at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:440)
        at io.spine.protodata.cli.app.MainKt.main(Main.kt:66)
Caused by: java.lang.AssertionError: Unexpected token: 'float'
        at com.intellij.lang.java.parser.JavaParserUtil.parseFragment(JavaParserUtil.java:210)
        at com.intellij.psi.impl.source.tree.JavaElementType$JavaDummyElementType.parseContents(JavaElementType.java:273)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.lambda$ensureParsed$2(LazyParseableElement.java:175)
        at com.intellij.psi.impl.DebugUtil.performPsiModification(DebugUtil.java:481)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.ensureParsed(LazyParseableElement.java:174)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.getFirstChildNode(LazyParseableElement.java:226)
        at com.intellij.psi.impl.source.JavaDummyElement.getFirstChildNode(JavaDummyElement.java:69)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:182)
        ... 37 more

Exception caught in ProtoData `main()`:
com.intellij.util.IncorrectOperationException: Incorrect method 'public io.spine.base.EventMessageField float() {
    return new io.spine.base.EventMessageField(getField().nested("float"));                
}  '
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.newException(PsiJavaParserFacadeImpl.java:388)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:184)
        at com.intellij.psi.impl.PsiElementFactoryImpl.createMethodFromText(PsiElementFactoryImpl.java:684)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:193)
        at io.spine.tools.psi.java.PsiElementFactoryDecorator.createMethodFromText(PsiElementFactoryDecorator.kt:126)
        at io.spine.tools.mc.java.field.FieldAccessor.method$mc_java_base(FieldAccessors.kt:86)
        at io.spine.tools.mc.java.field.MessageTypedField.addFieldMethods(MessageTypedField.kt:140)
        at io.spine.tools.mc.java.field.MessageTypedField.createClass$mc_java_base(MessageTypedField.kt:106)
        at io.spine.tools.mc.java.field.AddFieldClass.addFieldClasses(AddFieldClass.kt:103)
        at io.spine.tools.mc.java.field.AddFieldClass.tuneClass(AddFieldClass.kt:89)
        at io.spine.protodata.java.render.CreateNestedClass.doRender(CreateNestedClass.kt:108)
        at io.spine.protodata.java.render.MessageAction.render(MessageAction.kt:99)
        at io.spine.protodata.java.render.RenderActions.apply(RenderActions.kt:62)
        at io.spine.tools.mc.java.signal.SignalRenderer.doRender$lambda$0(Renderers.kt:64)
        at io.spine.tools.psi.java.PsiCommandsKt.execute$lambda$0(PsiCommands.kt:59)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:219)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:174)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:164)
        at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:150)
        at io.spine.tools.psi.java.PsiCommandsKt.execute(PsiCommands.kt:64)
        at io.spine.tools.psi.java.PsiCommandsKt.execute$default(PsiCommands.kt:55)
        at io.spine.tools.mc.java.signal.SignalRenderer.doRender(Renderers.kt:63)
        at io.spine.protodata.java.render.TypeListRenderer.doRender(TypeListRenderer.kt:63)
        at io.spine.protodata.java.render.AbstractRenderer.render(AbstractRenderer.kt:114)
        at io.spine.protodata.render.Renderer.renderSources(Renderer.kt:51)
        at io.spine.protodata.plugin.PluginKt.render(Plugin.kt:133)
        at io.spine.protodata.backend.Pipeline.renderSources(Pipeline.kt:303)
        at io.spine.protodata.backend.Pipeline.emitEventsAndRenderSources(Pipeline.kt:274)
        at io.spine.protodata.backend.Pipeline.invoke(Pipeline.kt:253)
        at io.spine.protodata.backend.Pipeline.invoke$default(Pipeline.kt:241)
        at io.spine.protodata.cli.app.Run.doRun(Main.kt:137)
        at io.spine.protodata.cli.app.Run.run(Main.kt:124)
        at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:198)
        at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:18)
        at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:400)
        at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:397)
        at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:415)
        at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:440)
        at io.spine.protodata.cli.app.MainKt.main(Main.kt:66)
Caused by: java.lang.AssertionError: Unexpected token: 'float'
        at com.intellij.lang.java.parser.JavaParserUtil.parseFragment(JavaParserUtil.java:210)
        at com.intellij.psi.impl.source.tree.JavaElementType$JavaDummyElementType.parseContents(JavaElementType.java:273)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.lambda$ensureParsed$2(LazyParseableElement.java:175)
        at com.intellij.psi.impl.DebugUtil.performPsiModification(DebugUtil.java:481)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.ensureParsed(LazyParseableElement.java:174)
        at com.intellij.psi.impl.source.tree.LazyParseableElement.getFirstChildNode(LazyParseableElement.java:226)
        at com.intellij.psi.impl.source.JavaDummyElement.getFirstChildNode(JavaDummyElement.java:69)
        at com.intellij.psi.impl.PsiJavaParserFacadeImpl.createMethodFromText(PsiJavaParserFacadeImpl.java:182)
        ... 37 more

> Task :proto:context:launchProtoData FAILED
```
</details>



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`mc-java` fails to compile messages that have fields named after Java keywords #19

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mc-java fails to compile messages that have fields named after Java keywords #19

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`mc-java` fails to compile messages that have fields named after Java keywords #19