[IMP] stock_account: Add partner on account entries

Add the partner references on account entries created from
a purchase order receipt or a customer invoice

Part-of: odoo/odoo#99411

addons/stock_account/models/stock_move.py

@@ -501,12 +501,13 @@ class StockMove(models.Model):
 
     def _prepare_account_move_vals(self, credit_account_id, debit_account_id, journal_id, qty, description, svl_id, cost):
         self.ensure_one()
-
+        valuation_partner_id = self._get_partner_id_for_valuation_lines()
         move_ids = self._prepare_account_move_line(qty, cost, credit_account_id, debit_account_id, description)
         date = self._context.get('force_period_date', fields.Date.context_today(self))
         return {
             'journal_id': journal_id,
             'line_ids': move_ids,
+            'partner_id': valuation_partner_id,
             'date': date,
             'ref': description,
             'stock_move_id': self.id,