Datastore rev field to match key substring rev when storing LatestRev
Datastore rev field to match key substring rev when storing LatestRev

This allows lookups that are not by key to find LatestRev entries correctly.

PiperOrigin-RevId: 283753084
Change-Id: I103d9a09182c1956aec5e5a7bab904b26f93094b

GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services,GoogleCloudPlatform/healthcare-federated-access-services