[TASK] Use proper TypeScript functions instead of arrow functions

Resolves: #91229
Releases: master, 9.5
Change-Id: Ieb6211252a74983a89b7a1057574a1ebe29ae390
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64341


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>