RepresentationManager._query_documents_recent() and
._query_documents_most_derived() do not filter soft-deleted documents,
unlike every other document query function in the codebase. This causes
the deriver's working representation to include documents that are being
garbage-collected.
Refs #444
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Hart