[BUGFIX] Replace module token in be shortcut returnUrl

During the addition of the token check for mod.php the token
in the BE shortcut url was already replaced (#56359) but
not in the returnUrl parameter that can be present.

This patch makes sure that also the module token is replaced in
the returnUrl param.

Resolves: #59963
Releases: 6.3, 6.2
Change-Id: I12b9d6022240d0399825aade21b0879bfbc7eb6c
Reviewed-on: https://review.typo3.org/31396
Reviewed-by: Markus Klein
Tested-by: Markus Klein