[BUGFIX] Fix media asset creation in filelist

After #81763, creating new media assets via "New file or folder" dialog
is broken. This patch fixes the broken behaviour.

Resolves: #81884
Related: #81763
Releases: master
Change-Id: Ifeb64705847c6c8ce3e5c0dea95a84ba828ef32e
Reviewed-on: https://review.typo3.org/53522


Reviewed-by: Manuel Selbach <manuel_selbach@yahoo.de>
Tested-by: Manuel Selbach <manuel_selbach@yahoo.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>