Cannot return lastUsedAt, createdAt or apiKeyFirstLetters on db.users

[dudanogueira]

we should be able to do:

client.users.db.get(user_id="duda", include_last_used_time=True)
# or
client.users.db.list_all(include_last_used_time=True)

and get in return:

UserDB(user_id='duda', role_names=['R1', 'admin', 'viewer'], user_type=<UserTypes.DB_DYNAMIC: 'db_user'>, active=True, created_at=datetime.datetime(2026, 2, 24, 19, 15, 18, 574000, tzinfo=datetime.timezone.utc), last_used_time=datetime.datetime(2026, 2, 25, 20, 57, 36, 419000, tzinfo=datetime.timezone.utc), api_key_first_letters='UzJ')