### 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 (gds_utilities_map.has(p_gds_utility)) {
			return gds_utilities_map[p_gds_utility];
		}
		int pos = gds_utilities_map.size();
		gds_utilities_map[p_gds_utility] = pos;
		return pos;
	}
	int get_method_bind_pos(MethodBind *p_method) {
		if (method_bind_map.has(p_method)) {
			return method_bind_map[p_method];
		}
		int pos = method_bind_map.size();
		method_bind_map[p_method] = pos;
		return pos;
	}
	int get_lambda_function_pos(GDScriptFunction *p_lambda_function) {
		if (lambdas_map.has(p_lambda_function)) {
			return lambdas_map[p_lambda_function];
		}
		int pos = lambdas_map.size();
		lambdas_map[p_lambda_function] = pos;
		return pos;
	}
	void alloc_ptrcall(int p_params) {