The work location of an employee was previously a fields.Char. That was
changed to a Many2one field to a the new model called work.location.
That had some consequences in other modules that had to be slightly
adjusted. The modules impacted were hr, hr_appraisal, hr_payroll.
Task id: 2335646
closesodoo/odoo#63192
Related: odoo/enterprise#15235
Related: odoo/upgrade#2020
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>