### Godot version

v4.2.beta.custom_build [a574c0296]

### System information

linux

### Issue description

Folder colors don't show up in file dialogs: when saving a scene, etc.

### Steps to reproduce

1. color a folder
2. create and open the save scene dialog and navigate to the colored folder
3. notice it's not shown its color in the file dialog

### Minimal reproduction project

any
switch (p_what) {
		case NOTIFICATION_THEME_CHANGED:
		case Control::NOTIFICATION_LAYOUT_DIRECTION_CHANGED:
		case NOTIFICATION_TRANSLATION_CHANGED: {
			_update_icons();
			invalidate();
		} break;
		case NOTIFICATION_PROCESS: {
			if (preview_waiting) {
				preview_wheel_timeout -= get_process_delta_time();
				if (preview_wheel_timeout <= 0) {
					preview_wheel_index++;
					if (preview_wheel_index >= 8) {
						preview_wheel_index = 0;
					}
					Ref<Texture2D> frame = theme_cache.progress[preview_wheel_index];
					preview->set_texture(frame);
					preview_wheel_timeout = 0.1;
				}
			}
		} break;