[FIR] Fix naming of local classes when serializing metadata

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

compiler/testData/codegen/box/polymorphicSignature/invoke.jvm_abi.txt

@@ -1,9 +0,0 @@
-MODULE main
-	CLASS InvokeKt$box$o$1.class
-		CLASS METADATA
-			PROPERTY getP()LInvokeKt$box$o$1$p$1;
-				Property: class.metadata.property.returnType
-					K1
-						.InvokeKt$box$o$1$p$1
-					K2
-						.InvokeKt$box$o$1.<no name provided>

compiler/testData/codegen/box/polymorphicSignature/invoke.kt

@@ -3,7 +3,6 @@
 // FULL_JDK
 // SKIP_JDK6
 // WITH_STDLIB
-// JVM_ABI_K1_K2_DIFF: KT-63655
 
 import java.lang.invoke.MethodHandles
 import java.lang.invoke.MethodType