Backup before friendly design pass

Moment/AppIntent.swift

@@ -60,7 +60,16 @@ enum MomentWidgetStorage {
     static let lastRecordedAtKey = "lastWidgetSnapshotDate"
 
     static var defaults: UserDefaults {
-        UserDefaults(suiteName: appGroupIdentifier) ?? .standard
+        guard appGroupAvailable,
+              let defaults = UserDefaults(suiteName: appGroupIdentifier) else {
+            return .standard
+        }
+
+        return defaults
+    }
+
+    private static var appGroupAvailable: Bool {
+        FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupIdentifier) != nil
     }
 
     static func enqueue(ratingRawValue: String) {