[BUGFIX] Do not create auto-create redirects for SysFolder and Spacer

Creating redirects for `SysFolder` and `Spacer` on slug changes does
not make sense as they are not reachable in the frontend. Updating
child pages if they start with the orignal slug however is a wanted
behaviour following the normal page type behaviour.

Resolves: #99624
Releases: main, 12.4
Change-Id: I8c93c9ceb858c0e0c0eda32ae8f6c58af652b7e3
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79623


Reviewed-by: Lina Wolf <112@linawolf.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>