[TASK] Provide default language presets for SiteBasedTestTrait

This cleans up some PHPStan reports.

Resolves: #100836
Releases: main, 12.4
Change-Id: I909d361a3b4b0b6f535b4f25de9ce832b9e4e205
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78964


Tested-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>