### 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_READ_THREAD_GUARD_V(Transform2D());
	return window_transform * stretch_transform * global_canvas_transform;
}
Transform2D Window::get_screen_transform_internal(bool p_absolute_position) const {
	ERR_READ_THREAD_GUARD_V(Transform2D());
	Transform2D embedder_transform;
	if (get_embedder()) {
		embedder_transform.translate_local(get_position());
		embedder_transform = get_embedder()->get_screen_transform_internal(p_absolute_position) * embedder_transform;
	} else if (p_absolute_position) {
		embedder_transform.translate_local(get_position());
	}
	return embedder_transform * get_final_transform();
}
Transform2D Window::get_popup_base_transform() const {
	ERR_READ_THREAD_GUARD_V(Transform2D());
	if (is_embedding_subwindows()) {
		return Transform2D();
	}
	Transform2D popup_base_transform;
	popup_base_transform.set_origin(get_position());
	popup_base_transform *= get_final_transform();
	if (get_embedder()) {
		return get_embedder()->get_popup_base_transform() * popup_base_transform;
	}
	return popup_base_transform;
}
bool Window::is_directly_attached_to_screen() const {