cancel old in-flight requests

[hfaulds]

requests are debounced but this can still happen:

Request A starts
Request B starts
Request B completes - results are shown
Request A completes - results are shown

This leads to the wrong results showing. This mostly affects development but cab happen with unreliable internet connections.

A better experience would be to keep track of all in flight requests and when a request resolves any older requests should be aborted.