[BUGFIX] Do not change TCA in ext_tables in irre_tutorial

Test related fixture extension 'irre_tutorial' still has calls
in ext_tables.php that changes $GLOBALS['TCA']. This is forbidden
for a while. Move those calls to Configuration/TCA/Overrides.

Resolves: #92878
Releases: master, 10.4
Change-Id: I56c652e5073ef26c46335e05213363007d4450e5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66703


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>