### 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 (transient) {
				_make_transient();
			}
			if (visible) {
				notification(NOTIFICATION_VISIBILITY_CHANGED);
				emit_signal(SceneStringNames::get_singleton()->visibility_changed);
				RS::get_singleton()->viewport_set_active(get_viewport_rid(), true);
			}
#ifdef TOOLS_ENABLED
			if (is_part_of_edited_scene()) {
				
				set_message_translation(false);
				notification(NOTIFICATION_TRANSLATION_CHANGED);
			}
#endif
			notification(NOTIFICATION_THEME_CHANGED);
		} break;
		case NOTIFICATION_READY: {
			if (wrap_controls) {
				
				_update_child_controls();
			}
		} break;
		case NOTIFICATION_THEME_CHANGED: {
			emit_signal(SceneStringNames::get_singleton()->theme_changed);
			_invalidate_theme_cache();
			_update_theme_item_cache();