[TASK] Move render arguments to initializeArguments() in BytesVH

Move the argument registrations away from the render() method
to initializeArguments(), to prevent any errors with PHP7 and
subclassed ViewHelpers if/when render() method signatures change.
Change the UnitTest form RadioViewHelperTest with setArguments().

Resolves: #77046
Releases: master
Change-Id: I46b256988280e4266f41570959115b9c1aaedbf7
Reviewed-on: https://review.typo3.org/48927


Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>