Using the test class as fixture is problematic
since the constructor changes in phpunit 10.

Resolves: #100402
Related: #100249
Releases: main
Change-Id: I8315346c5f9dbb9d38283d9fdf9a51b2c98450de
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78375


Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>