Don't store hard references to psi elements in transferable data (KT-33802)

This leads to project leaked errors in tests.

idea/src/org/jetbrains/kotlin/idea/refactoring/cutPaste/MoveDeclarationsCopyPasteProcessor.kt

@@ -75,7 +75,14 @@ class MoveDeclarationsCopyPasteProcessor : CopyPastePostProcessor<MoveDeclaratio
 
         val imports = file.importDirectives.map { it.text }
 
-        return listOf(MoveDeclarationsTransferableData(file.virtualFile.url, sourceObjectFqName, declarations, imports))
+        return listOf(
+            MoveDeclarationsTransferableData(
+                file.virtualFile.url,
+                sourceObjectFqName,
+                declarations.map { it.text },
+                imports
+            )
+        )
     }
 
     override fun extractTransferableData(content: Transferable): List<MoveDeclarationsTransferableData> {

idea/src/org/jetbrains/kotlin/idea/refactoring/cutPaste/MoveDeclarationsProcessor.kt

@@ -76,8 +76,9 @@ class MoveDeclarationsProcessor(
             if (sourceContainer == sourcePsiFile && sourcePsiFile.packageFqName == targetPsiFile.packageFqName) return null
 
             // check that declarations were cut (not copied)
-            val filteredDeclarations = sourceContainer.declarations.filter { it in data.declarations }
-            if (filteredDeclarations.isNotEmpty()) return null
+            if (sourceContainer.declarations.any { declaration -> declaration.text in data.declarationTexts }) {
+                return null
+            }
 
             return MoveDeclarationsProcessor(
                 project,
@@ -85,7 +86,7 @@ class MoveDeclarationsProcessor(
                 targetPsiFile,
                 declarations,
                 data.imports,
-                data.declarations.map { it.text }
+                data.declarationTexts
             )
         }
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/cutPaste/MoveDeclarationsTransferableData.kt

@@ -18,13 +18,12 @@ package org.jetbrains.kotlin.idea.refactoring.cutPaste
 
 import com.intellij.codeInsight.editorActions.TextBlockTransferableData
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
-import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import java.awt.datatransfer.DataFlavor
 
 class MoveDeclarationsTransferableData(
     val sourceFileUrl: String,
     val sourceObjectFqName: String?,
-    val declarations: List<KtNamedDeclaration>,
+    val declarationTexts: List<String>,
     val imports: List<String>
 ) : TextBlockTransferableData {