Change DeserializedContainerSource.presentableFqName to String

To allow outputting something other than "Class 'XXX'" in the diagnostic
message for declarations deserialized from JS

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedMemberDescriptor.kt

@@ -55,8 +55,8 @@ interface DeserializedContainerSource : SourceElement {
     // True iff this is container is "invisible" because it's loaded from a pre-release class and this compiler is a release
     val isPreReleaseInvisible: Boolean
 
-    // This FQ name should only be used for error messages
-    val presentableFqName: FqName
+    // This string should only be used in error messages
+    val presentableString: String
 }
 
 interface DeserializedCallableMemberDescriptor : DeserializedMemberDescriptor, CallableMemberDescriptor