[TASK] Show hidden sub group items in be_groups records

Show hidden records in the subgroup list of be_group
records, too.

Change-Id: Iaca85f22bdf8a4c308b59fd37bd75b4a913614a0
Resolves: #81452
Releases: master, 8.7
Reviewed-on: https://review.typo3.org/53085


Reviewed-by: Jasmina Ließmann <code@frauliessmann.de>
Tested-by: Jasmina Ließmann <code@frauliessmann.de>
Reviewed-by: Marco Christian Krenn <krenn@webconsulting.at>
Tested-by: Marco Christian Krenn <krenn@webconsulting.at>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>