Review batchClaimEntries suspicious log

[pierre]

Seen in the field:

DBBackedQueue-notif-analytics_notifications: batchClaimEntries only claimed partial entries 100/98

Why can this still happen?

[pierre]

While I don't fully understand the issue, #70 most likely works around it (get + claim done in one transaction).

Will close after verifying we don't see these anymore in production logs.