[TASK] Clean up some linkvalidator classes

Minor class modification to make the code more
dense, more strict and reduce duplication.

Resolves: #99094
Releases: main
Change-Id: Iac3e7926dd16351ae0e0e7c45dfd099aa2eb61b6
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76608


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Jochen <rothjochen@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>