[FIX] account: fix invoice line default taxes at account onchange

If there is no product on an invoice line, there is an onchange to ease tax
input that prefills the line with the account default taxes.
Because this is a relational field (a many2many), field = recordset
is as valid as field = recordset.ids, but the semantics is different.
In the second case, the id list is added with 4 commands, not a 6.
So the default taxes are only added, and none are ever removed.
Note that the ORM behaviour changed; this .ids was historical,
but before (v10) it did remove other taxes.

opw 2046112

closes odoo/odoo#35657

Signed-off-by: Nans Lefebvre (len) <len@odoo.com>

addons/account/models/account_invoice.py

@@ -1657,7 +1657,7 @@ class AccountInvoiceLine(models.Model):
             return
         if not self.product_id:
             fpos = self.invoice_id.fiscal_position_id
-            self.invoice_line_tax_ids = fpos.map_tax(self.account_id.tax_ids, partner=self.partner_id).ids
+            self.invoice_line_tax_ids = fpos.map_tax(self.account_id.tax_ids, partner=self.partner_id)
         elif not self.price_unit:
             self._set_taxes()