Current behavior:
The pos_self_ordering_mode field was not interpreted as invisible when
no PoS existed. Because this is a required field you were not able to do
any changes in the settings if you had no PoS.
Steps to reproduce:
- Archive all PoS
- Go to Settings, and change any settings you want
- Save the settings
- You get an error "Invalid field 'pos_self_ordering_mode'"
opw-3649784
closesodoo/odoo#147126
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>