[TASK] Remove unnecessary ?? operator for regex matches

Resolves: #105214
Releases: main, 12.4
Change-Id: I9172c5ee7dc691005684043c115e4ee708e25695
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/86439


Reviewed-by: Benjamin Franzke <ben@bnf.dev>
Tested-by: Benjamin Franzke <ben@bnf.dev>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Thomas Hohn <tho@gyldendal.dk>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>