[TASK] Add clarification and tests to SiteBasedRedirectResolver

The original issue for endless redirect loops is already fixed via
https://forge.typo3.org/issues/88032
whereas the query does not result in 307's anymore.

Additional information on redirects is added as comment.

Resolves: #87814
Releases: master, 9.5
Change-Id: I8c97b85cc30d217fe793608da1f26be52e8f68dc
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/59815


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Benni Mack <benni@typo3.org>