[BUGFIX] Catch exception while creating invalid folder

Creating a folder with in invalid identifier throws an exception.
Catch and handle this exception.

Resolves: #71405
Releases: master
Change-Id: I8e4822d0b3f6ae28cced952af5efcc45d7301317
Reviewed-on: https://review.typo3.org/44611


Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Josef Glatz <josef.glatz@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>