[Bug]: addAliases & addAlias is throwing not implemented error from android platform

[momin-mostafa]

What happened?

When we try to add alias, this error message shows up. It's not happening in iOS,

seems to be you guys forgot to handle this method channel request

Steps to reproduce?

1. Use addAliases in project

What did you expect to happen?

it should just add alias

OneSignal Flutter SDK version

^5.2.9

Which platform(s) are affected?

• [ ] iOS
• [x] Android

Relevant log output

I/flutter ( 1052): MissingPluginException(No implementation found for method OneSignal#addAliases on channel OneSignal#user)
I/flutter ( 1052): #0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:332:7)
I/flutter ( 1052): <asynchronous suspension>
I/flutter ( 1052): #1      OneSignalUser.addAliases (package:onesignal_flutter/src/user.dart:79:12)
I/flutter ( 1052): <asynchronous suspension>
I/flutter ( 1052): #2      OneSignalUser.addAlias (package:onesignal_flutter/src/user.dart:72:12)
I/flutter ( 1052): <asynchronous suspension>

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