### Godot version

v4.0.beta10.official [d0398f62f]

### System information

Windows 11

### Issue description

When hovering over the `MenuBar` items - the hover state activates only once (on first hover).

As demonstrated in this video - Debug menu toggles to hover visual style only once:


https://user-images.githubusercontent.com/433527/209774611-a3d6d80b-deb2-466b-b39d-bb480a5ade17.mp4

### Steps to reproduce

See video, try the same in Godot editor.

### Minimal reproduction project

N/A
return language;
}
void MenuBar::set_flat(bool p_enabled) {
	if (flat != p_enabled) {
		flat = p_enabled;
		queue_redraw();
	}
}
bool MenuBar::is_flat() const {
	return flat;
}
void MenuBar::set_start_index(int p_index) {
	if (start_index != p_index) {
		start_index = p_index;
		_update_menu();
	}
}
int MenuBar::get_start_index() const {
	return start_index;
}
void MenuBar::set_prefer_global_menu(bool p_enabled) {
	if (is_native != p_enabled) {
		if (is_native) {
			_clear_menu();
		}
		is_native = p_enabled;
		_update_menu();
	}
}
bool MenuBar::is_prefer_global_menu() const {