[BUGFIX] Take into account all file and folder permissions

When handling the old file permission settings from
user or user group records, all current FAL user
permissions should be set accordingly, to not allow
file actions with FAL which were not allowed before.

In particular no write / change actions should be
allowed if no permissions are granted in the records.

Releases: 6.0, 6.1, 6.2
Resolves: #51005
Related: #51007

Change-Id: I873f23ed02428842621c8256df5792e54abbfe2c
Reviewed-on: https://review.typo3.org/23045
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel