[rqlrewrite] sort possible types when turning is_instance_of into is
Helps get predictable output even with python -R. Related to #4959402.
for table, column in [
('transactions', 'tx_time'),
('tx_entity_actions', 'tx_uuid'),
('tx_relation_actions', 'tx_uuid')]:
repo.system_source.create_index(session, table, column)
commit()