### 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)
if (size == p_callback.size && position == p_callback.position) {
		return;
	}
	position = p_callback.position;
	if (size != p_callback.size) {
		size = p_callback.size;
		_update_viewport_size();
	}
}
void Window::_propagate_window_notification(Node *p_node, int p_notification) {