get_note and get_attachment selected with the ACL inline and skipped the purged
filter, so a tombstone came back 200 (#2128 says a purged note reads as absent).
Both now go through _get_visible, which cannot skip it. Reorder's batch lookup
gains the same filter, so a stale id cannot write a place onto a tombstone.
Fixes#5383.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>