[BUGFIX] Form Wizard saving destroys Radio Buttons

This fixes a wrong parsing of \r\n characters for radio
button options.

Resolves: #53727
Releases: 6.2, 6.1, 6.0
Change-Id: I9a88be010a7dd982776bee4a98ba99d97fcc406b
Reviewed-on: https://review.typo3.org/26471
Reviewed-by: Mario Rimann
Reviewed-by: Markus Klein
Tested-by: Markus Klein