[FIX] account: randomize invoice reference if no match

Take explanation of
commit d94e8a0
but this time, have a suffix with a flavor of %(year)s

Before this commit, validating the invoice crashes

After this commit it doesn't.

OPW 1912954

closes odoo/odoo#29160

addons/account/models/account_invoice.py

@@ -397,7 +397,12 @@ class AccountInvoice(models.Model):
         if self.company_id.invoice_reference_type == 'invoice_number':
             seq_suffix = self.journal_id.sequence_id.suffix or ''
             regex_number = '.*?([0-9]+)%s$' % seq_suffix
-            identification_number = int(re.match(regex_number, self.number).group(1))
+            exact_match = re.match(regex_number, self.number)
+            if exact_match:
+                identification_number = int(exact_match.group(1))
+            else:
+                ran_num = str(uuid.uuid4().int)
+                identification_number = int(ran_num[:5] + ran_num[-5:])
             prefix = self.number
         else:
             #self.company_id.invoice_reference_type == 'partner'