[FIX] hr_holidays_attendance: allow non HR officer user to refuse leaves

When refusing a leave, we are deleting the associated overtime if any so it can be
used again by the employee. However, we need HR Officer rights to access overtime
field. The sudo() should be used before we try to read the field to avoid errors
in case the manager of the employee does not have HR rights.

closes odoo/odoo#80945

X-original-commit: 1ffbcf9787e5efe00d49f18baba0144f631ada51
Signed-off-by: Kevin Baptiste <kba@odoo.com>
Signed-off-by: Alex Thuyls (alt) <alt@odoo.com>

addons/hr_holidays_attendance/models/hr_leave.py

@@ -77,5 +77,5 @@ class HRLeave(models.Model):
 
     def action_refuse(self):
         res = super().action_refuse()
-        self.overtime_id.sudo().unlink()
+        self.sudo().overtime_id.unlink()
         return res