I don't use PS but here's some food for thought.  Hopefully, someone familiar with PS and ND input would stop by to help.

There is little reason to believe that the deduction hasn't made it into PS since it was signed into law last April, so it's not so recent, and ND-1 is final and EF-ready, according to Intuit.

If there is no box to check or special input for 1099-R, it may mean that you need to go into the input for state modifications/adjustments for the trigger.  That's kinda how tax logic in these programs is built.

Just as an example, Lacerte/PTO has the trigger for SC's military retirement deduction embedded within the input for 1099-R.  But for ND, it's simply a plugin on the input screen for ND Modifications.