[IMP] l10n_ar: l10n_ar_vat is a clean CUIT number

Save in l10n_ar_vat field the cleaun up CUIT number (without spacings,
dashes and points.

This way we can use it so sent it properly as a number to AFIP.

closes odoo/odoo#51135

Related: odoo/enterprise#10553
Signed-off-by: Josse Colpaert <jco@openerp.com>

addons/l10n_ar/models/res_partner.py

@@ -52,7 +52,7 @@ class ResPartner(models.Model):
         one is not found """
         recs_ar_vat = self.filtered(lambda x: x.l10n_latam_identification_type_id.l10n_ar_afip_code == '80')
         for rec in recs_ar_vat:
-            rec.l10n_ar_vat = rec.vat
+            rec.l10n_ar_vat = stdnum.ar.cuit.compact(rec.vat)
         remaining = self - recs_ar_vat
         remaining.l10n_ar_vat = False