[FIX] base: fix write deny while creating new contact

How to reproduce
================

1. Create a user with lower privileges then admin
2. Add a new company and a new contact of that company in the contact
   app at the sametime
3. Manually save

This will result in a write access denied

opw-3127591

closes odoo/odoo#112595

X-original-commit: 93a37df79fc30c2f9ac31d60dc897452851fd5bd
Signed-off-by: John Laterre (jol) <jol@odoo.com>

odoo/addons/base/models/res_partner.py

@@ -600,10 +600,10 @@ class Partner(models.Model):
         if self.commercial_partner_id == self:
             commercial_fields = self._commercial_fields()
             if any(field in values for field in commercial_fields):
-                self._commercial_sync_to_children()
+                self.sudo()._commercial_sync_to_children()
         for child in self.child_ids.filtered(lambda c: not c.is_company):
             if child.commercial_partner_id != self.commercial_partner_id:
-                self._commercial_sync_to_children()
+                self.sudo()._commercial_sync_to_children()
                 break
         # 2b. Address fields: sync if address changed
         address_fields = self._address_fields()