chore(mobile): properly patch openapi with custom response dto (#11753)

mobile/lib/utils/openapi_patching.dart

@@ -0,0 +1,12 @@
+import 'package:openapi/api.dart';
+
+dynamic upgradeDto(dynamic value, String targetType) {
+  switch (targetType) {
+    case 'UserPreferencesResponseDto':
+      if (value is Map) {
+        if (value['rating'] == null) {
+          value['rating'] = RatingResponse().toJson();
+        }
+      }
+  }
+}