[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/56592


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Steffen Kamper <info@sk-typo3.de>
Tested-by: Steffen Kamper <info@sk-typo3.de>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>