fix(relay): correct APNs topic to real mobile bundle id

The production configmap used APNS_TOPIC=com.idealapp.RxCode.Mobile, which
is not an app registered under the auth key's team (T7GYB573Y6). APNs
rejected every push with 400 TopicDisallowed. The actual RxCode Mobile
bundle id is app.rxlab.rxcodemobile (matching the working relay .env),
so use that. Also fixes Live Activity pushes, whose topic is derived by
suffixing this value with .push-type.liveactivity.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

Author: sirily11

relay-server/k8s/configmap.yaml

@@ -9,7 +9,7 @@ data:
   # Listen address inside the pod. The Service targets this port.
   RELAY_ADDR: ":8787"
   # APNs topic must equal the RxCode Mobile bundle identifier exactly.
-  APNS_TOPIC: "com.idealapp.RxCode.Mobile"
+  APNS_TOPIC: "app.rxlab.rxcodemobile"
   # Fallback only for old desktop builds that omit per-device APNs environment.
   # Current desktop clients send sandbox/production per paired device.
   APNS_PRODUCTION: "true"