### 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)
_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	windows[p_window].rect_changed_callback = p_callable;
}
void DisplayServerWindows::window_set_window_event_callback(const Callable &p_callable, WindowID p_window) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	windows[p_window].event_callback = p_callable;
}
void DisplayServerWindows::window_set_input_event_callback(const Callable &p_callable, WindowID p_window) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	windows[p_window].input_event_callback = p_callable;
}
void DisplayServerWindows::window_set_input_text_callback(const Callable &p_callable, WindowID p_window) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	windows[p_window].input_text_callback = p_callable;
}
void DisplayServerWindows::window_set_drop_files_callback(const Callable &p_callable, WindowID p_window) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	windows[p_window].drop_files_callback = p_callable;
}
void DisplayServerWindows::window_set_title(const String &p_title, WindowID p_window) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_window));
	SetWindowTextW(windows[p_window].hWnd, (LPCWSTR)(p_title.utf16().get_data()));
}
void DisplayServerWindows::window_set_mouse_passthrough(const Vector<Vector2> &p_region, WindowID p_window) {