[FIX] *_ponto: solve exception on empty name

The name for a transaction imported from Ponto is taken from the remittanceInformation, failing that,
the reference should be used. However in case the transaction attributes do contain the
remittanceInformation key, but the value is False or empty, the failover to the reference fails.

account_bank_statement_import_online_ponto/models/online_bank_statement_provider_ponto.py

@@ -212,7 +212,7 @@ class OnlineBankStatementProviderPonto(models.Model):
                 'sequence': sequence,
                 'date': date,
                 'ref': re.sub(' +', ' ', ref) or '/',
-                'name': attributes.get('remittanceInformation', ref),
+                'name': attributes.get('remittanceInformation') or ref,
                 'unique_import_id': transaction['id'],
                 'amount': attributes['amount'],
             }