[TASK] Streamline TSFE internal code

Some minor details are changed within TSFE.

- metaCharset is now evaluated at the same time as other TypoScript options making this option available earlier in the process
- getFromCache() and headerNoCache() now optionally receive a PSR-7 request
to evaluate serverParams from the PSR-7 request and not the superglobals

Resolves: #90853
Releases: master
Change-Id: I443925c5d056db10cafb4e81aa30fc7db91c3c71
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63948


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>