fix(dashboard): update check to see if redis has today's data

app/main/views/dashboard.py

@@ -282,7 +282,7 @@ def aggregate_by_type(notification_data):
         todays_data = annual_limit_client.get_all_notification_counts(current_service.id)
 
         # if redis is empty, query the db
-        if todays_data is None:
+        if all(value == 0 for value in todays_data.values()):
             todays_data = service_api_client.get_service_statistics(service_id, limit_days=1, today_only=False)
             annual_data_aggregate = combine_daily_to_annual(todays_data, annual_data, "db")