issue #23982: get credit cards back working in mobile

This is the interesting line of code. This seems like a reasonable way to handle a reasonable quirk in our design specification. I'm not sure how this was ever possibly previously working: there seems no other accommodation in the client to deal with this kind of thing:
https://github.com/xtuple/xtuple/blob/master/enyo-client/database/orm/models/credit_card.json#L18