[TASK] Add rte_transform to rte options

Resolves: #53479
Releases: 6.2

Change-Id: Ife80d6c19e0320f85150aabab6d155e3d7d7ad9b
Reviewed-on: https://review.typo3.org/29225
Reviewed-by: Nico de Haen
Tested-by: Nico de Haen