[dataimport] separate entities table from other metadata in SQLGenObjectStore 'entities' needs to be updated first as every other table has references to its rows. Remove use of thread-local storage in the process. related to #9177565.

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()