### 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)

}
void GDScriptAnalyzer::resolve_function_signature(GDScriptParser::FunctionNode *p_function, const GDScriptParser::Node *p_source, bool p_is_lambda) {
	if (p_source == nullptr) {
		p_source = p_function;
	}
	StringName function_name = p_function->identifier != nullptr ? p_function->identifier->name : StringName();
	if (p_function->get_datatype().is_resolving()) {
		push_error(vformat(R"(Could not resolve function "%s": Cyclic reference.)", function_name), p_source);
		return;
	}
	if (p_function->resolved_signature) {
		return;
	}
	p_function->resolved_signature = true;
	GDScriptParser::FunctionNode *previous_function = parser->current_function;
	parser->current_function = p_function;
	GDScriptParser::DataType prev_datatype = p_function->get_datatype();
	GDScriptParser::DataType resolving_datatype;
	resolving_datatype.kind = GDScriptParser::DataType::RESOLVING;