Fix: don't treat local classes as unspecialised

This shouldn't matter either way since they can't be subject to external references

java/kotlin-extractor/src/main/kotlin/utils/TypeSubstitution.kt

@@ -209,6 +209,7 @@ fun isUnspecialised(paramsContainer: IrTypeParametersContainer, args: List<IrTyp
     val parentUnspecialised = when {
         remainingArgs.isEmpty() -> true
         parent == null -> false
+        parent !is IrClass -> false
         else -> isUnspecialised(paramsContainer.parentAsClass, remainingArgs)
     }
     return unspecialisedHere && parentUnspecialised