[perf] migrate slow operations to non-blocking calls

[pq]

We're doing a lot of long-running processing on the UI thread which is

1. hurting performance, and
2. spamming the logs (distracting users as in Slow operations are prohibited on EDT #7151, Error reported when opening the project: Slow operations are prohibited on EDT (IDEA U2024.2.1) #7641 and Slow operations are prohibited on EDT (Bazel-related) #8083)

We've had issues safely making the change to use the prescribed ReadAction.nonBlocking APIs (see for example: #7792) so we'll want to proceed thoughtfully.

This issue will stand as a tracker for migrations.

Some resources:

• 📖 plugin docs
• 📖 ReadAction.java

---

🚧🚧🚧

Blocking calls to migrate:

• [CQ] stop blocking on FlutterStudioStartupActivity startup #8093
• [CQ] stop blocking on FlutterPluginsLibraryManager update #8094
• [perf] stop blocking on SdkRunConfig.addConsoleFilters #8095
• io.flutter.bazel.WorkspaceCache#refresh
  • Slow operations are prohibited on EDT (Bazel-related) #8083
• io.flutter.run.SdkRunConfig#getState

[pq]

SdkRunConfig.addConsoleFilters:

java.lang.Throwable: Slow operations are prohibited on EDT. See SlowOperations.assertSlowOperationsAreAllowed javadoc.
	at com.intellij.openapi.diagnostic.Logger.error(Logger.java:376)
	at com.intellij.util.SlowOperations.assertSlowOperationsAreAllowed(SlowOperations.java:114)
	at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexDataImpl.ensureIsUpToDate(WorkspaceFileIndexDataImpl.kt:153)
	at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexDataImpl.getFileInfo(WorkspaceFileIndexDataImpl.kt:98)
	at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexImpl.getFileInfo(WorkspaceFileIndexImpl.kt:267)
	at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexImpl.findFileSet(WorkspaceFileIndexImpl.kt:220)
	at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexImpl.isInContent(WorkspaceFileIndexImpl.kt:86)
	at com.intellij.openapi.roots.impl.ProjectFileIndexImpl.isInContent(ProjectFileIndexImpl.java:211)
	at com.jetbrains.lang.dart.util.PubspecYamlUtil.findPubspecYamlFile(PubspecYamlUtil.java:58)
	at com.jetbrains.lang.dart.util.DartUrlResolverImpl.<init>(DartUrlResolverImpl.java:47)
	at com.jetbrains.lang.dart.util.DartUrlResolver.getInstance(DartUrlResolver.java:36)
	at com.jetbrains.lang.dart.ide.runner.DartConsoleFilter.<init>(DartConsoleFilter.java:44)
	at io.flutter.run.SdkRunConfig.addConsoleFilters(SdkRunConfig.java:228)
	at io.flutter.run.SdkRunConfig.getState(SdkRunConfig.java:194)
	at io.flutter.run.SdkRunConfig.getState(SdkRunConfig.java:56)