Fix: invalid key in User object validation

PasswordLoginUserIdentityType has username, email and id. isValidUserObject() was looking for a 'user' key instead of 'username'

Author: kamilkisiela

packages/client/src/AccountsClient.js

@@ -31,7 +31,7 @@ import { hashPassword } from './encryption';
 import type { TransportInterface } from './TransportInterface';
 import type { TokenStorage, AccountsClientConfiguration } from './config';
 
-const isValidUserObject = (user: PasswordLoginUserIdentityType) => has(user, 'user') || has(user, 'email') || has(user, 'id');
+const isValidUserObject = (user: PasswordLoginUserIdentityType) => has(user, 'username') || has(user, 'email') || has(user, 'id');
 
 const ACCESS_TOKEN = 'accounts:accessToken';
 const REFRESH_TOKEN = 'accounts:refreshToken';