[BUGFIX] Array access on null in ConditionMatcher

Resolves: #99088
Releases: main, 11.5
Change-Id: I67f799fdca4d736c36775d50b5ac753eba93ba52
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76614


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benni Mack <benni@typo3.org>