Symfony's AsCommand attribute encodes `hidden = true` into
a trailing `|` for the name attribute. Drop that for our
command list and mark the command as hidden in the command
registry.

Resolves: #102292
Related: #101567
Releases: main, 12.4
Change-Id: I6415e3f5525764aab336bab20432c032e0665632
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81660


Reviewed-by: Benjamin Franzke <ben@bnf.dev>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benjamin Franzke <ben@bnf.dev>