### 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)

case GDScriptParser::ClassNode::Member::UNDEFINED:
				ERR_PRINT("Trying to resolve undefined member.");
				break;
		}
	}
	parser->current_class = previous_class;
}
void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_class, const GDScriptParser::Node *p_source) {
	if (p_source == nullptr && parser->has_class(p_class)) {
		p_source = p_class;
	}
	if (!p_class->resolved_interface) {
		if (!parser->has_class(p_class)) {
			String script_path = p_class->get_datatype().script_path;
			Ref<GDScriptParserRef> parser_ref = get_parser_for(script_path);
			if (parser_ref.is_null()) {
				push_error(vformat(R"(Could not find script "%s".)", script_path), p_source);
				return;
			}
			Error err = parser_ref->raise_status(GDScriptParserRef::PARSED);
			if (err) {
				push_error(vformat(R"(Could not resolve script "%s": %s.)", script_path, error_names[err]), p_source);
				return;
			}
			ERR_FAIL_COND_MSG(!parser_ref->get_parser()->has_class(p_class), R"(Parser bug: Mismatched external parser.)");
			GDScriptAnalyzer *other_analyzer = parser_ref->get_analyzer();
			GDScriptParser *other_parser = parser_ref->get_parser();
			int error_count = other_parser->errors.size();
			other_analyzer->resolve_class_interface(p_class);
			if (other_parser->errors.size() > error_count) {