[BUGFIX] Allow additional parameters in static routes

If the static route value is using additionalParams, they should
be added to the page that is fetched.

The patch parses the "parameters" key (&my=value&key=1) into
additional parameters of the PageRouter.

Resolves: #87087
Releases: master, 9.5
Change-Id: I8688e891d1b6bfda3a546eb13812bbb80dfea1c1
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62891


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Susanne Moog <look@susi.dev>