I have a site with a custom panel slug, and since all model resolutions in `Janitor.php` check for existence of `panel/*` in the path, https://github.com/bnomei/kirby-janitor/blob/00af7a2f52404556d3049d34e7a25ae889d289ec/classes/Janitor.php#L265 fails with "calling ->uuid() on null"