- Assert on the presence of the `::text` cast rather than PostgreSQL's exact
rendering of the WHEN clause, which is an implementation detail of its
deparser and would need revisiting on a future major release.
- Correct 0251's docstring on locking: reinstalling a trigger takes ACCESS
EXCLUSIVE, which is stronger than the ROW EXCLUSIVE held by 0242's backfill
and blocks readers too. It is brief and scans nothing, but on a busy table it
queues behind any long-running query.
- Correct 0251's docstring on reversal: reversing 0242 drops these triggers
rather than recreating them. The no-op reverse is still right, since undoing
a corrective reinstall has no target state of its own.
- Drop the release note's bug-fix bullet, which is generated in aggregate at
release time and would conflict there. The operator warning stays: it is
upgrade-time guidance that a changelog entry would not convey.
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