[ULC] Fix annotations invalid parents

Fixed #KT-45287

compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/KtLightElementBase.kt

@@ -23,12 +23,16 @@ import com.intellij.psi.impl.light.LightElement
 import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.psi.KtElement
 
-abstract class KtLightElementBase(private val parent: PsiElement) : LightElement(parent.manager, KotlinLanguage.INSTANCE) {
+abstract class KtLightElementBase(private var parent: PsiElement) : LightElement(parent.manager, KotlinLanguage.INSTANCE) {
     override fun toString() = "${this.javaClass.simpleName} of $parent"
     override fun getParent(): PsiElement = parent
 
     abstract val kotlinOrigin: KtElement?
 
+    internal fun setParent(newParent: PsiElement) {
+        parent = newParent
+    }
+
     override fun getText() = kotlinOrigin?.text ?: ""
     override fun getTextRange() = kotlinOrigin?.textRange ?: TextRange.EMPTY_RANGE
     override fun getTextOffset() = kotlinOrigin?.textOffset ?: 0

compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/KtLightModifierList.kt

@@ -61,6 +61,10 @@ abstract class KtLightModifierList<out T : KtLightElement<KtModifierListOwner, P
 
     private fun computeAnnotations(): List<KtLightAbstractAnnotation> {
         val annotationsForEntries = owner.givenAnnotations ?: lightAnnotationsForEntries(this)
+        //TODO: Hacky way to update wrong parents for annotations
+        annotationsForEntries.forEach {
+            it.parent = this
+        }
         val modifierListOwner = parent
         if (modifierListOwner is KtLightClassForSourceDeclaration && modifierListOwner.isAnnotationType) {