Checklist

• I am sure the error is coming from Pyrogram's code and not elsewhere
• I have searched in the issue tracker for similar bug reports, including closed ones
• I ran pip3 install -U https://github.com/pyrogram/pyrogram/archive/master.zip and reproduced the issue using the latest development version

Description

When get user/chat with multiple usernames, pyrogram get raw object with empty field username and with not empty field usernames but ignore second field when parse to User object

Steps to reproduce

Try get user with multiple usernames by him main username (other will raise KeyError, see #1239)

Code example

user = await cl.get_users("shadowraze")
print(user)

Logs

{
    "_": "User",
    "id": 5825705556,
    "is_self": false,
    "is_contact": false,
    "is_mutual_contact": false,
    "is_deleted": false,
    "is_bot": false,
    "is_verified": false,
    "is_restricted": false,
    "is_scam": false,
    "is_fake": false,
    "is_support": false,
    "is_premium": true,
    "first_name": "ytn",
    "status": "UserStatus.RECENTLY",
    "phone_number": "*********"
}