[BUGFIX] IP locking: Handle IP stack switch without PHP error

Adjust the IP validation to avoid a warning in case the IP stack
used by the current user has changed.

Resolves: #90047
Releases: master, 9.5
Change-Id: I814e72648c7b404acc5eaf0b2270685dbab16abe
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63001


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Richard Haeser <richard@maxserv.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>