### 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 (p_statement == nullptr) {
		return;
	}
	switch (p_statement->type) {
		case GDScriptParser::Node::IF:
		case GDScriptParser::Node::FOR:
		case GDScriptParser::Node::MATCH:
		case GDScriptParser::Node::PATTERN:
		case GDScriptParser::Node::RETURN:
		case GDScriptParser::Node::WHILE:
			
			if (p_suite->get_datatype().is_set() && (p_suite->get_datatype() != p_statement->get_datatype())) {
				
				
				p_suite->datatype.kind = GDScriptParser::DataType::VARIANT;
				p_suite->datatype.type_source = GDScriptParser::DataType::UNDETECTED;
			} else {
				p_suite->set_datatype(p_statement->get_datatype());
				p_suite->datatype.type_source = GDScriptParser::DataType::INFERRED;
			}
			break;
		default:
			break;
	}
}
void GDScriptAnalyzer::resolve_suite(GDScriptParser::SuiteNode *p_suite) {