[BUGFIX] Keep parameters in link browser’s upload form

Any given attribute stored in the `P` parameter is kept and attached to
the return URL of the upload form.

Resolves: #83923
Releases: master, 8.7, 7.6
Change-Id: Id6ff93f0a30691f7bde84275128a34eb479499de
Reviewed-on: https://review.typo3.org/56596


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>