fix: return after promise rejection

Author: russellwheatley

packages/firestore/ios/RNFBFirestore/RNFBFirestoreCollectionModule.m

@@ -252,6 +252,7 @@ - (void)invalidate {
                                                            @"RNFB Firestore: Invalid Aggregate Type"
                                                                   reason:reason
                                                                 userInfo:nil]];
+      return;
     }
   }