### 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_
	drop_events = true;
	process_events();
	drop_events = false;
}
void DisplayServerWindows::release_rendering_thread() {
}
void DisplayServerWindows::make_rendering_thread() {
}
void DisplayServerWindows::swap_buffers() {
#if defined(GLES3_ENABLED)
	if (gl_manager) {
		gl_manager->swap_buffers();
	}
#endif
}
void DisplayServerWindows::set_native_icon(const String &p_filename) {