[FIX] sale: Down payment in multi company

When creating a product "down payment" in multi company in function "create_invoices"
of the model "sale.advance.payment.inv", a default company was set on this product
and it could lead to access rights error when trying to invoice a SO from an other
company.

NB: The down payment product must be shared with all the companies, as this is
the only one that you can set in the ir.config_parameter.

opw:1841468

addons/sale/wizard/sale_make_invoice_advance.py

@@ -179,4 +179,5 @@ class SaleAdvancePaymentInv(models.TransientModel):
             'invoice_policy': 'order',
             'property_account_income_id': self.deposit_account_id.id,
             'taxes_id': [(6, 0, self.deposit_taxes_id.ids)],
+            'company_id': False,
         }