A write to a thread or comment now reads, in the head check, the pull
request that holds it and is refused without a mutation when that is
another pull request. Submitting the pending review keeps the
submission to reconcile, so an unknown outcome blocks a second review.
GraphQL errors count as refusals only when every type names one, so a
GitHub timeout reports an unknown outcome. Pending reviews are found
by viewerDidAuthor among up to 100, without the unused commit field. A
resolved thread stays open while the reader writes in it, unsupported
writes no longer poll, and the docs state the partial two-step write.
Yichen Jiang
6e882cd6e3