### 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)

gen->write_if(condition);
				if (condition.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
				err = _parse_block(codegen, if_n->true_block);
				if (err) {
					return err;
				}
				if (if_n->false_block) {
					gen->write_else();
					err = _parse_block(codegen, if_n->false_block);
					if (err) {
						return err;
					}
				}
				gen->write_endif();
			} break;
			case GDScriptParser::Node::FOR: {
				const GDScriptParser::ForNode *for_n = static_cast<const GDScriptParser::ForNode *>(s);
				codegen.start_block();
				GDScriptCodeGenerator::Address iterator = codegen.add_local(for_n->variable->name, _gdtype_from_datatype(for_n->variable->get_datatype(), codegen.script));
				gen->start_for(iterator.type, _gdtype_from_datatype(for_n->list->get_datatype(), codegen.script));
				GDScriptCodeGenerator::Address list = _parse_expression(codegen, err, for_n->list);
				if (err) {
					return err;
				}
				gen->write_for_assignment(iterator, list);
				if (list.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}