[BUGFIX] Fix notices in QueryGenerator

Resolves: #99511
Releases: main, 11.5
Change-Id: I9657a72e68ac0fea8ee8b0d75fcaa23a3cb4ce8b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77323


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>