this alert should be 'critical'

- critical alerts bypass notification dampening settings like "do not disturb'
- we want this alert to get our attention no matter what the iPhone/iWatch settings are
- this syntax is iOS specific

documentation https://companion.home-assistant.io/docs/notifications/critical-notifications/

config/alerts/garage_after_dark.yaml

@@ -8,3 +8,8 @@ garage_after_dark:
   skip_first: False
   notifiers:
   - all_ios
+  data:
+    push:
+      sound:
+        name: "alarm.caf"
+        critical: 1