### Godot version

4.0.3.stable

### System information

windows 11

### Issue description

fullscreen on the window node is not working and will show up as a windowed.

### Steps to reproduce

disable Embed Subwindows in Project Settings/Display/Window.
create a window node and set its mode to fullscreen.

### Minimal reproduction project

[fullscreen.zip](https://github.com/godotengine/godot/files/11821834/fullscreen.zip)
ERR_MAIN_THREAD_GUARD;
	if (window_id != DisplayServer::INVALID_WINDOW_ID) {
		DisplayServer::get_singleton()->window_request_attention(window_id);
	}
}
void Window::move_to_foreground() {
	ERR_MAIN_THREAD_GUARD;
	if (embedder) {
		embedder->_sub_window_grab_focus(this);
	} else if (window_id != DisplayServer::INVALID_WINDOW_ID) {
		DisplayServer::get_singleton()->window_move_to_foreground(window_id);
	}
}
bool Window::can_draw() const {
	ERR_READ_THREAD_GUARD_V(false);
	if (!is_inside_tree()) {
		return false;
	}
	if (window_id != DisplayServer::INVALID_WINDOW_ID) {
		return DisplayServer::get_singleton()->window_can_draw(window_id);
	}
	return visible;
}
void Window::set_ime_active(bool p_active) {