acp_thread: Defer status updates until turn completion (#60148)

We were signaling this too early, causing the syncing generator to get
updated too soon.

Release Notes:

- N/A
e783b2f063Ben Brandt committed on 6/30/2026, 1:03:45 PM· committed by GitHubparent4a99aa8
2 files changedLine totals unavailable