edit prediction: Request trigger (#43588)

Adds a `trigger` field to the zeta1/zeta2 prediction requests so that we
can distinguish between editor, diagnostic, and zeta-cli requests.

Release Notes:

- N/A
36a3b41f53Agus Zubiaga committed on 11/26/2025, 8:34:29 PM· committed by GitHubparentf89e530
7 files changedLine totals unavailable