Canceling "search around"

I searched for some tweets in the demo and then searched around on a person's profile image. The search spinner just keeps on spinning and the only way I can cancel seems to be to reload the demo.

Reproduce the demo flow: search for tweets, then use “search around” on a person’s profile image. Trace the search request and spinner handling from the relevant application entry point; done means the search can be canceled without reloading the demo and the interface stops spinning.

Written by the indexing model from the issue text.