[BUGFIX] Allow to create folders with name "0"

Resolves: #102192
Releases: main, 12.4, 11.5
Change-Id: I0cc48e27d32b6d6164d9d580121968610a9333b9
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81655


Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>