search: use an alert and suggestion when OOM-like behavior surfaces
Created by: rvantonder
It's not currently possible to surface an alert
in searcher
since it can't be propagated back. That would be the preferred solution.
Instead, I'm relying on the error string here to promote it to an alert instead, as before. It's either this, or I can completely suppress the error and only log it, and return "no results".