### 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)
return mouse_mode;
}
void DisplayServerWindows::warp_mouse(const Point2i &p_position) {
	_THREAD_SAFE_METHOD_
	WindowID window_id = _get_focused_window_or_popup();
	if (!windows.has(window_id)) {
		return; 
	}
	if (mouse_mode == MOUSE_MODE_CAPTURED) {
		old_x = p_position.x;
		old_y = p_position.y;
	} else {
		POINT p;
		p.x = p_position.x;
		p.y = p_position.y;
		ClientToScreen(windows[window_id].hWnd, &p);
		SetCursorPos(p.x, p.y);
	}
}
Point2i DisplayServerWindows::mouse_get_position() const {
	POINT p;
	GetCursorPos(&p);
	return Point2i(p.x, p.y) - _get_screens_origin();
}
BitField<MouseButtonMask> DisplayServerWindows::mouse_get_button_state() const {
	return last_button_state;
}
void DisplayServerWindows::clipboard_set(const String &p_text) {