[!!!][TASK] Build strict PSR-15 middlewares

All PSR-15 middlewares now do not set the
$GLOBALS['TYPO3_REQUEST'] object anymore. Instead,
the RequestHandlers are using them for all
other logic (e.g. GP etc) where the request object
or any other attribute has not been handed in
yet.

It is now safe to say that PSR-7 request/response
objects have to be used within middlewares to
access or manipulate GET/POST data. Also,
the safety net for overriding GET/POST again
is still in place for FE (data = GP:id) in
order for existing TypoScript to work still,
until all other code gets global-free.

There are still places in TYPO3 Core where $TYPO3_REQUEST
is necessary (TypoScriptConditionMatcher, Error Handling)
which are added accordingly.

Resolves: #87661
Releases: master
Change-Id: Ibe499b6fda86ccd3abefcb3c8be294a7cb765d74
Reviewed-on: https://review.typo3.org/59490


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <noreply@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>