assistant2: Make `Esc` cancel current completion (#23076)

This PR makes it so pressing `Esc` in Assistant2 will cancel the current
completion.

Release Notes:

- N/A

Marshall Bowers committed 1y ago

c1c767a5bdc6a8f572ff643c3d0ea42fffca7865

Parent: b59a9f1

Committed by GitHub <noreply@github.com> on 1/13/2025, 7:09:27 PM