[TASK] Replace invalid icon with working example

The backend layout wizard now uses a working example by using an
existing icon.

Resolves: #91910
Releases: main, 12.4
Change-Id: If6df3bd73d1ff6dc1a7a3e71cadf2e89b1a18bd5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84529


Tested-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>