R1:e18b161464ee

Don't show closed typeahead results while open results exist

Summary:
Ref T4420. When a result list contains both open and closed results, hide the closed results. I think this has a good chance of almost always working, and feeling very intuitive. It has a small chance of being a weird mess. It feels reasonable to me so far

The one bad case I can come up with here is that if you have results which shadow each other, like "Apples" (a closed project) and "Apples and Bananas" (an open project), it is…