[BUGFIX] Optimize workspace notification emails

When transforming the workspace notification emails, the option to set
an alternative email sender was not added, but is now configurable properly.

Resolves: #46634
Releases: master
Change-Id: I3c254de90ce2c490f1e076eee60e99c885f91575
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63878


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>