Enable mass validation of monthly statements.

--HG-- branch : 11.0

tests/test_account_report.py

@@ -279,6 +279,9 @@
         batches.refresh()
         self.assertTrue(all(batches.mapped(lambda r: r.state == "done")))
 
+        with self.assertRaises(odoo.exceptions.UserError):
+            server_action.with_context(active_ids=batch_ids).run()
+
     def _launchMonthlyStatement(self):
         """Create montly statements.
         """