purchase_order_type : missing company_id in partner onchange

[cle-enovea]

On onchnage_partner_id, we need to keep company_id on @api.onchange field list, in order to let the super updating information (i.e. fiscal position).

Module

purchase_order_type

Describe the bug

After company update, the fiscal position is not updated (as the standard Odoo will do)

To Reproduce

15.0 and 16.0