Backup alarm should state that it can't get Availability Group data when it checks for backups on replicas in an AG and the AG connection is in outage (4273876)

Backup alarm should state that it can't get Availability Group data when it checks for backups on replicas in an AG and the AG connection is in outage

When a database participates in an Availability Group the DS gets backup data from the replicas to determine if a backup has been done recently or not. The DS uses the relevant AG connection to find out which replicas it needs to use. If the AG connection has a connection failure then the backup alarm message should state that the data is not available due to the connection failure instead of giving a misleading error as it currently does.