### 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)

if (err) {
						return err;
					}
				}
				gen->write_assert(condition, message);
				if (condition.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
				if (message.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					codegen.generator->pop_temporary();
				}
#endif
			} break;
			case GDScriptParser::Node::BREAKPOINT: {
#ifdef DEBUG_ENABLED
				gen->write_breakpoint();
#endif
			} break;
			case GDScriptParser::Node::VARIABLE: {
				const GDScriptParser::VariableNode *lv = static_cast<const GDScriptParser::VariableNode *>(s);
				
				GDScriptCodeGenerator::Address local = codegen.locals[lv->identifier->name];
				GDScriptDataType local_type = _gdtype_from_datatype(lv->get_datatype(), codegen.script);
				bool initialized = false;
				if (lv->initializer != nullptr) {
					
					if (local_type.has_type && local_type.builtin_type == Variant::ARRAY) {
						if (local_type.has_container_element_type()) {
							codegen.generator->write_construct_typed_array(local, local_type.get_container_element_type(), Vector<GDScriptCodeGenerator::Address>());
						} else {