fix(auth): exception returns msg as message

packages/wyatt_authentication_bloc/lib/src/core/exceptions/exceptions.dart

@@ -23,6 +23,9 @@ abstract class AuthenticationFailureInterface extends AppException
   String code;
   String msg;
 
+  @override
+  String get message => msg;
+
   AuthenticationFailureInterface(this.code, this.msg);
   AuthenticationFailureInterface.fromCode(this.code)
       : msg = 'An unknown error occurred.';