[BUGFIX] allow deletion folder with deleted references to files

Filelist currently doesn't allow the deletion of a folder
with references to files that have been deleted
because with doctrine migration the check for deleted=0 was
forgotten.

This patch adds the necessary check again.

Resolves: #81087
Releases: master, 8.7
Change-Id: Ie30704b7e6f41805150f44c5e41e7f679c903756
Reviewed-on: https://review.typo3.org/52663


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Henrik Elsner <helsner@dfau.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>