Since the Owl conversion of the partner autocomplete widgets, the search by VAT number on a `Many2one` field of `res.partner` wasn't working anymore. closes odoo/odoo#118784 X-original-commit: 6229674b1788b4e9b62ebc5393e2d09b68b4a56e Signed-off-by: Florian Daloze (fda) <fda@odoo.com> Signed-off-by: Louis Baudoux (lba) <lba@odoo.com>