Drop the thanks-only entries the user already acknowledged through the
group's carrier: groupThanksOnlyAcknowledgments points older
thanks-only PRs in a repo at the most recently merged one, and the
workflow posts one acknowledgment there. On the next run that carrier has
no pending note of its own, so without this step the covered PRs would
come back as a new group. A thanks-only entry is covered when the user
commented on a thanks-only PR in the same repo that merged after it, and
that comment is newer than the entry's newest note. Substantive entries
are never dropped here.
Drop the thanks-only entries the user already acknowledged through the group's carrier: groupThanksOnlyAcknowledgments points older thanks-only PRs in a repo at the most recently merged one, and the workflow posts one acknowledgment there. On the next run that carrier has no pending note of its own, so without this step the covered PRs would come back as a new group. A thanks-only entry is covered when the user commented on a thanks-only PR in the same repo that merged after it, and that comment is newer than the entry's newest note. Substantive entries are never dropped here.