Fix notification delivery after powering on a device. (#5035)

* Debugging with Notifications.

* Don't run the NSE until the device is unlocked.

* Let the NSE run long enough to deliver the default notification content.

Turns out that exit(0) results in the notification be discarded when you have the notification filtering entitlement.

* Remove debugging notifications.

---------

Co-authored-by: Stefan Ceriu <stefanc@matrix.org>

ElementX/Sources/Application/AppDelegate.swift

@@ -29,15 +29,15 @@ final class AppDelegate: NSObject, UIApplicationDelegate {
         NSTextAttachment.registerViewProviderClass(PillAttachmentViewProvider.self, forFileType: InfoPlistReader.main.pillsUTType)
         return true
     }
-
+    
     func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
         callbacks.send(.registeredNotifications(deviceToken: deviceToken))
     }
-
+    
     func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
         callbacks.send(.failedToRegisteredNotifications(error: error))
     }
-
+    
     func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
         orientationLock
     }