### 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)

int stack_index = i + max_locals + RESERVED_STACK;
		for (int j = 0; j < temporaries[i].bytecode_indices.size(); j++) {
			opcodes.write[temporaries[i].bytecode_indices[j]] = stack_index | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
		}
		if (temporaries[i].type != Variant::NIL) {
			function->temporary_slots[stack_index] = temporaries[i].type;
		}
	}
	if (constant_map.size()) {
		function->_constant_count = constant_map.size();
		function->constants.resize(constant_map.size());
		function->_constants_ptr = function->constants.ptrw();
		for (const KeyValue<Variant, int> &K : constant_map) {
			function->constants.write[K.value] = K.key;
		}
	} else {
		function->_constants_ptr = nullptr;
		function->_constant_count = 0;
	}
	if (name_map.size()) {
		function->global_names.resize(name_map.size());
		function->_global_names_ptr = &function->global_names[0];
		for (const KeyValue<StringName, int> &E : name_map) {
			function->global_names.write[E.value] = E.key;
		}
		function->_global_names_count = function->global_names.size();
	} else {
		function->_global_names_ptr = nullptr;
		function->_global_names_count = 0;
	}