[BUGFIX] Align default demand value for integrity status

For consistency, the redirect demand's default
value for the integrity status is now set to
NULL, to show all records by default.

This is especially important for existing
installations, having redirects which do
not yet contain a value for the new
`integrity_status` field.

Resolves: #103900
Related: #99485
Releases: main
Change-Id: Iba8dc0180e22f5e31b51e6c33fb71b47b5486238
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84382


Reviewed-by: Torben Hansen <derhansen@gmail.com>
Tested-by: Torben Hansen <derhansen@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>