### Godot version

4.0 Beta10

### System information

Windows 10, Vulkan, GTX1060

### Issue description

`PropertyTweener`'s methods' return value are not discarded and effect the unary operator at next line.

In Editor:
![in_editor](https://user-images.githubusercontent.com/61624558/210715100-04bdf283-7954-4be3-94ca-338987b24c5b.png)


In cpp:
![in_cpp](https://user-images.githubusercontent.com/61624558/210715127-519f6d54-fc15-468f-9aca-ba7d387a5a7b.png)


### Steps to reproduce

Just run the Minimal reproduction project.

### Minimal reproduction project

[Bug Report.zip](https://github.com/godotengine/godot/files/10349829/Bug.Report.zip)

base_class = base_class->base_type.class_type;
	}
	
	const StringName &native = base.native_type;
	if (class_exists(native)) {
		MethodInfo method_info;
		if (ClassDB::has_property(native, name)) {
			StringName getter_name = ClassDB::get_property_getter(native, name);
			MethodBind *getter = ClassDB::get_method(native, getter_name);
			if (getter != nullptr) {
				p_identifier->set_datatype(type_from_property(getter->get_return_info()));
				p_identifier->source = GDScriptParser::IdentifierNode::INHERITED_VARIABLE;
			}
			return;
		}
		if (ClassDB::get_method_info(native, name, &method_info)) {
			
			p_identifier->set_datatype(make_callable_type(method_info));
			p_identifier->source = GDScriptParser::IdentifierNode::INHERITED_VARIABLE;
			return;
		}
		if (ClassDB::get_signal(native, name, &method_info)) {
			
			p_identifier->set_datatype(make_signal_type(method_info));
			p_identifier->source = GDScriptParser::IdentifierNode::INHERITED_VARIABLE;
			return;
		}
		if (ClassDB::has_enum(native, name)) {
			p_identifier->set_datatype(make_native_enum_type(native, name));
			p_identifier->source = GDScriptParser::IdentifierNode::MEMBER_CONSTANT;