Marek Lewandowski4ee53f595aInternal: Brought back a test removed in [ab63b60](https://github.com/ckeditor/ckeditor5-watchdog/commit/ab63b603094a303f482a9520a8601264f993ca7f) that caused CC drop (see [ckeditor/ckeditor5#5848](https://github.com/ckeditor/ckeditor5/issues/5848)).