[react-sync] Check assignability before assigning the actor (#97638)
On scheduled runs of the Update React workflow, `github.actor` often
resolves to `github-actions[bot]`, which cannot be assigned to pull
requests in `vercel/next.js`. Since the sync switched to the GitHub App
token, adding a non-assignable assignee fails the request with 403 e.g.
https://github.com/vercel/next.js/actions/runs/32392135342/job/96500520936#step:8:781
(user tokens silently ignored it instead), which failed the entire sync
run and raced the in-flight reviewer request, leaving the created pull
request without a reviewer.
The script now checks assignability and skips assignment with a warning
when the actor cannot be assigned, and the finalize requests (assign,
request reviewers, add labels) run through `Promise.allSettled`, with
any failures rethrown together as an `AggregateError` so the run still
fails on real errors.
Co-authored-by: Claude Code (kimi-k3[1m]) <noreply@anthropic.com>
next.js
8c7ed006 - [react-sync] Check assignability before assigning the actor (#97638)
