This condition will trigger if an AG Database sync state is anything other than SYNCHRONIZED.
Reference: https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/always-on-availability-groups-dynamic-management-views-functions?view=sql-server-ver15
*NOTE*
The count evaluation is used to ensure this AC still triggers when it has had consecutive TRUE evaluations, but the result set has changed.