[BUGFIX] Do not cache content with different status code than 200

Resolves: #83755
Releases: master, 8.7, 7.6
Change-Id: I6e13133f221137c63283ec1575fc405a38668b1a
Reviewed-on: https://review.typo3.org/58582


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Johannes Kasberger <johannes.kasberger@reelworx.at>
Tested-by: Johannes Kasberger <johannes.kasberger@reelworx.at>
Reviewed-by: Tomas Norre Mikkelsen <tomasnorre@gmail.com>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>