### Godot version

4.2 f5696c3

### System information

Windows 10 x64

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/7ad0e3b6-9599-4f7b-a07c-da54779e647a)


### Steps to reproduce

1. Add node
2. Attach a built-in script
3. Add child node
4. Add script to the child node
5. In some method write `get_parent().bui`

### Minimal reproduction project

N/A
}
					Ref<Script> parent = scr->get_base_script();
					if (parent.is_valid()) {
						base_type.script_type = parent;
					} else {
						base_type.kind = GDScriptParser::DataType::NATIVE;
						base_type.builtin_type = Variant::OBJECT;
						base_type.native_type = scr->get_instance_base_type();
					}
				} else {
					return false;
				}
			} break;
			case GDScriptParser::DataType::NATIVE: {
				StringName class_name = base_type.native_type;
				if (!ClassDB::class_exists(class_name)) {
					return false;
				}
				
				PropertyInfo prop;
				if (ClassDB::get_property_info(class_name, p_identifier, &prop)) {
					StringName getter = ClassDB::get_property_getter(class_name, p_identifier);
					if (getter != StringName()) {
						MethodBind *g = ClassDB::get_method(class_name, getter);
						if (g) {
							r_type = _type_from_property(g->get_return_info());
							return true;
						}
					} else {
						r_type = _type_from_property(prop);