enable_compacting_data_for_streaming_and_repair has to be LiveUpdate

[Botond Dénes]

In theory it is, but when propagated down to the table object, the LiveUpdate property is lost (database.cc):

1251     cfg.enable_compacting_data_for_streaming_and_repair = db_config.enable_compacting_data_for_streaming_and_repair();

Here, we use named_value<T>::operator(), which casts the utils::updateable_value<T> to const T& and hence the update signal chain is broken. table::config::enable_compacting_data_for_streaming_and_repair is bound to a constant and will not receive updates on the config item.