$listDirn and $listOrder are undefined in cmss-tmpl-file #24
Description
$this->listDirn and $this->listOrder are undefined in https://github.com/joomla-projects/gsoc25_api/blob/main/src/administrator/components/com_ccm/tmpl/cmss/default.php#L34C100-L37
Add them on top in the php-part. See https://github.com/joomla/joomla-cms/blob/5.3-dev/administrator/components/com_content/tmpl/articles/default.php#L38-L39