fix(enum): use non interned sting for variant names

Refs: #178

Author: Xenira

src/builders/enum_builder.rs

@@ -112,7 +112,7 @@ impl EnumBuilder {
         };
 
         for case in self.cases {
-            let name = ZendStr::new_interned(case.name, true);
+            let name = ZendStr::new(case.name, true);
             let value = match &case.discriminant {
                 Some(value) => Self::create_enum_value(value)?,
                 None => ptr::null_mut(),