### 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
if (file_list_display_mode == FILE_LIST_DISPLAY_THUMBNAILS && p_path.get_base_dir() == current_path && searched_string.length() == 0 && file_list_vb->is_visible_in_tree()) {
		for (int i = 0; i < files->get_item_count(); i++) {
			if (files->get_item_metadata(i) == p_path) {
				
				Array udata;
				udata.resize(2);
				udata[0] = i;
				udata[1] = files->get_item_text(i);
				EditorResourcePreview::get_singleton()->queue_resource_preview(p_path, this, "_file_list_thumbnail_done", udata);
				break;
			}
		}
	}
}
void FileSystemDock::_fs_changed() {
	button_hist_prev->set_disabled(history_pos == 0);
	button_hist_next->set_disabled(history_pos == history.size() - 1);
	scanning_vb->hide();
	split_box->show();
	if (tree->is_visible()) {
		_update_tree(get_uncollapsed_paths());
	}
	if (file_list_vb->is_visible()) {
		_update_file_list(true);
	}
	set_process(false);
}
void FileSystemDock::_set_scanning_mode() {