[TASK] Avoid unused arg in PageTsConfigRecordsOverviewController

And rename the method since those general
getButtons() methods are ugly.

Resolves: #103914
Related: #103903
Releases: main, 12.4
Change-Id: Iaa428d711b98d2bf178aa0ba54ab507f7ca1c09b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84399


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>