[FIX] l10n_latam_invoice_document: check of account_move type

The `type` field was renamed `move_type` in
d675dbaa but a forward-port re-added a
use of the old `type` name, which breaks if an account.move is
unlinked while l10n_latam_invoice_document is unlinked (and there are
related moves to update).

Instead of renaming the field, use the proper utility method for the
category (purchase) provided by account.move.

closes odoo/odoo#47301

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

addons/l10n_latam_invoice_document/models/account_move.py

@@ -179,5 +179,5 @@ class AccountMove(models.Model):
     def unlink(self):
         """ When using documents, on vendor bills the document_number is set manually by the number given from the vendor,
         the odoo sequence is not used. In this case We allow to delete vendor bills with document_number/move_name """
-        self.filtered(lambda x: x.type in x.get_purchase_types() and x.state in ('draft', 'cancel') and x.l10n_latam_use_documents).write({'name': '/'})
+        self.filtered(lambda x: x.is_purchase_document() and x.state in ('draft', 'cancel') and x.l10n_latam_use_documents).write({'name': '/'})
         return super().unlink()