### 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 (locals.size() > max_locals) {
			max_locals = locals.size();
		}
		stack_identifiers[p_id] = p_stackpos;
		if (debug_stack) {
			block_identifiers[p_id] = p_stackpos;
			GDScriptFunction::StackDebug sd;
			sd.added = true;
			sd.line = current_line;
			sd.identifier = p_id;
			sd.pos = p_stackpos;
			stack_debug.push_back(sd);
		}
	}
	void push_stack_identifiers() {
		stack_identifiers_counts.push_back(locals.size());
		stack_id_stack.push_back(stack_identifiers);
		if (debug_stack) {
			RBMap<StringName, int> block_ids(block_identifiers);
			block_identifier_stack.push_back(block_ids);
			block_identifiers.clear();
		}
	}
	void pop_stack_identifiers() {