### 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)

other_analyzer->resolve_class_member(p_class, p_index);
		if (other_parser->errors.size() > error_count) {
			push_error(vformat(R"(Could not resolve member "%s".)", member.get_name()), p_source);
		}
		return;
	}
	
	if (!p_class->base_type.is_resolving()) {
		Error err = resolve_class_inheritance(p_class);
		if (err) {
			return;
		}
	}
	GDScriptParser::ClassNode *previous_class = parser->current_class;
	parser->current_class = p_class;
	GDScriptParser::DataType resolving_datatype;
	resolving_datatype.kind = GDScriptParser::DataType::RESOLVING;
	{
		switch (member.type) {
			case GDScriptParser::ClassNode::Member::VARIABLE: {
				check_class_member_name_conflict(p_class, member.variable->identifier->name, member.variable);
				member.variable->set_datatype(resolving_datatype);
				resolve_variable(member.variable, false);
				
				for (GDScriptParser::AnnotationNode *&E : member.variable->annotations) {
					E->apply(parser, member.variable);
				}
			} break;
			case GDScriptParser::ClassNode::Member::CONSTANT: {
				check_class_member_name_conflict(p_class, member.constant->identifier->name, member.constant);