[FIR] Fix naming of local classes when serializing metadata

^KT-63655: Fixed
^KT-63901: Fixed
^KT-63988: Fixed

compiler/testData/codegen/box/javaInterop/kt43217.jvm_abi.txt

@@ -1,9 +0,0 @@
-MODULE main
-	CLASS A.class
-		CLASS METADATA
-			PROPERTY b
-				Property: class.metadata.property.returnType
-					K1
-						.A$b$1
-					K2
-						.A.<no name provided>

compiler/testData/codegen/box/javaInterop/kt43217.kt

@@ -1,6 +1,5 @@
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
-// JVM_ABI_K1_K2_DIFF: KT-63655
 
 // FILE: kt43217.kt