Stop Voice Retries when alarm is acknowledged

If alarm is acknowledged (from different source) after voice notification starts operators get "Alarm cannot be acknowledged at this time" error message, voice notification fails, and retries start and operators continue to get the same voice message error. Process repeats until all retries are complete for that contact and then the notification policy stops before moving to the next contact. The system should give a voice prompt that "the alarm is already acknowledged" and then stop retries.