Handle ObjNotFoundErrors separately from other replay errors
They can't be retried, so it's useful to split them off
Test Plan
tox tests updated
Migrated from D2779 (view on Phabricator)
Staging instance, all changes can be removed at any time
They can't be retried, so it's useful to split them off
tox tests updated
Migrated from D2779 (view on Phabricator)