[FIR] Fix JavaClass.modality for annotation classes and enums

- `JavaClass.modality` should return the correct modality instead of
  requiring the caller to handle annotation classes and enums.

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/FirJavaFacade.kt

@@ -245,7 +245,7 @@ abstract class FirJavaFacade(
             val visibility = javaClass.visibility
             this@buildJavaClass.visibility = visibility
             classKind = javaClass.classKind
-            modality = if (classKind == ClassKind.ANNOTATION_CLASS || classKind == ClassKind.ENUM_CLASS) Modality.FINAL else javaClass.modality
+            modality = javaClass.modality
             this.isTopLevel = classId.outerClassId == null
             isStatic = javaClass.isStatic
             javaPackage = packageCache.getValue(classSymbol.classId.packageFqName)

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/JavaUtils.kt

@@ -8,9 +8,6 @@ package org.jetbrains.kotlin.fir.java
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.fir.FirSession
-import org.jetbrains.kotlin.fir.declarations.FirDeclarationDataKey
-import org.jetbrains.kotlin.fir.declarations.FirDeclarationDataRegistry
-import org.jetbrains.kotlin.fir.declarations.FirRegularClass
 import org.jetbrains.kotlin.fir.diagnostics.ConeSimpleDiagnostic
 import org.jetbrains.kotlin.fir.diagnostics.DiagnosticKind
 import org.jetbrains.kotlin.fir.expressions.FirArrayOfCall
@@ -39,6 +36,7 @@ internal val JavaModifierListOwner.modality: Modality
 
 internal val JavaClass.modality: Modality
     get() = when {
+        isAnnotationType || isEnum -> Modality.FINAL
         isSealed -> Modality.SEALED
         isAbstract -> Modality.ABSTRACT
         isFinal -> Modality.FINAL