[TASK] Migrate functional tests to PHPunit v9

Rector is used to migrate functional tests to PHPunit v9.

Resolves: #94724
Related: #94706
Releases: master
Change-Id: I378acd4145aacb5448d461eec48c3a1695876d61
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70238


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benni Mack <benni@typo3.org>