fix(dynamic-links, ios): remove double-reject on resolveLink

the iOS firebase-ios-sdk handleUniversalLink completion handler
correctly handles all of the error conditions by resolving or rejecting
the passed in react-native promise as needed, but was incorrectly
then testing success status and rejecting again on unfound links

e2e tests were already probing this case to verify correct behavior
at the javascript level but the native-level double-reject went
unnoticed until now

Author: mikehardy

packages/dynamic-links/ios/RNFBDynamicLinks/RNFBDynamicLinksModule.m

@@ -206,14 +206,7 @@ - (id)init {
     }
   };
 
-  NSURL *linkURL = [NSURL URLWithString:link];
-  BOOL success = [[FIRDynamicLinks dynamicLinks] handleUniversalLink:linkURL completion:completion];
-  if (!success) {
-    [RNFBSharedUtils rejectPromiseWithUserInfo:reject userInfo:(NSMutableDictionary *) @{
-        @"code": @"not-found",
-        @"message": @"Dynamic link not found"
-    }];
-  }
+  [[FIRDynamicLinks dynamicLinks] handleUniversalLink:[NSURL URLWithString:link] completion:completion];
 }
 
 - (FIRDynamicLinkComponents *)createDynamicLinkComponents:(NSDictionary *)dynamicLinkDict {