Include "Set Value" fields in "Search in Prototype"
This is probably very much an edge case, so I'll understand if it ends up at the bottom of the backlog, but I had a situation arise recently when a feature of a prototype appeared to be reverting the placeholder text in an input to a previous version, but what was really happening was that I failed to change it in an "on Focus Out" > "Set Value" action for the field.
I would have caught this more readily if the "Set Value" fields were searchable.
The challenge for your UI/UX people is to make it evident why such an element was returned in the search. Good luck with that!