[FIX] account, purchase: Recurrent vendor bills (#23320)

- set due date based on payment terms at generation for recurring bills
- do not generate "This vendor bill has been created form POXXX" for bills that have been generated by cron

addons/account/models/account_invoice.py

@@ -509,7 +509,7 @@ class AccountInvoice(models.Model):
             'is_recurring_document': True,
         })
         # set the due date
-        #invoice._onchange_payment_term_date_invoice()
+        invoice._onchange_payment_term_date_invoice()
         link = '<a href=# data-oe-model=account.invoice data-oe-id=%d>%s</a>' % (self.id, self.number)
         invoice.message_post(body=_('This bill has been generated by %s') % link)
         return invoice

addons/purchase/models/account_invoice.py

@@ -212,7 +212,7 @@ class AccountInvoice(models.Model):
     def create(self, vals):
         invoice = super(AccountInvoice, self).create(vals)
         purchase = invoice.invoice_line_ids.mapped('purchase_line_id.order_id')
-        if purchase and not invoice.refund_invoice_id:
+        if purchase and not invoice.refund_invoice_id and not invoice.is_recurring_document:
             message = _("This vendor bill has been created from: %s") % (",".join(["<a href=# data-oe-model=purchase.order data-oe-id="+str(order.id)+">"+order.name+"</a>" for order in purchase]))
             invoice.message_post(body=message)
         return invoice