[BUGFIX] Set correct unit test namespaces

Fix a series of core unit test classes to correct namespace.

Resolves: #85151
Releases: master
Change-Id: Ibfffae113ba3114acf616e65d48d8b508eee9353
Reviewed-on: https://review.typo3.org/57122


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Riny van Tiggelen <info@online-gamer.nl>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>