fix(dynamic-links, ios): resolveLink 404 error handling fix

the underlying SDK started returning an error for 404s with an error message,
previously it did not. Bending new error into existing error encoding for
backwards compatibility

Author: mikehardy

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

@@ -193,7 +193,7 @@ - (id)init {
             @"url": dynamicLink.url.absoluteString,
             @"minimumAppVersion": dynamicLink.minimumAppVersion == nil ? [NSNull null] : dynamicLink.minimumAppVersion,
         });
-    } else if (!error) {
+    } else if (!error || (error && [error.localizedDescription containsString:@"dynamicLinks error 404"])) {
       [RNFBSharedUtils rejectPromiseWithUserInfo:reject userInfo:(NSMutableDictionary *) @{
           @"code": @"not-found",
           @"message": @"Dynamic link not found"