[FIX] hr_attendance: White screen if employee is not set
[FIX] hr_attendance: White screen if employee is not set

When the user was not linked to an employee, the first screen of the Attendance app
(the check-in/out screen) stayed white.

opw:1880582

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo