prevent playback on OV for items not in ORR

[phigg]

Collections or exhibits that feature records that are intended to be metadata-only because the media has not be cleared for ORR can still be played on the OV website.

This will most often appear in the Programs content block because we are rarely able to clear full programs, but we still want to share metadata about them.

Rock and Roll features the 10 programs in the series, but the programs are not in the ORR. The program records all have their Level of User Access set to "On Location". Despite that, the two programs on the OV collection page can be played in full without being on VPN or the GBH network.