[TASK] Remove usage of deprecated method `setMethods` in UnitTests

The function `setMethods` in the MockBuilder class of PHPunit is deprecated.
Use `onlyMethods` or `addMethods` instead.

Resolves: #94750
Releases: master
Change-Id: I08728a7a3c8342c5f7f47146fa907d5ae4e58c9e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70291


Tested-by: core-ci <typo3@b13.com>
Tested-by: Marvin Dosse <marvindosse@gmail.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Marvin Dosse <marvindosse@gmail.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>