Resolves: fdo#73260 fix Registered Database single tab dialog

Change-Id: I71bfe44b3d1f88a44a2c53b10c6880c2a3a4ede0
(cherry picked from commit 5ac26a7f0054ca3d1af41f3483dc0e32a343bb96)
(cherry picked from commit 8cfd13d44798954983aaedd21eba9b5b7ca911ee)
Reviewed-on: https://gerrit.libreoffice.org/7384
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Reviewed-by: Eike Rathke <erack@redhat.com>