For some reasons when we delete a MergeTree Part in atomic way something may go wrong - and leave the `delete_tmp_*` folder or it's part on disk. This may lead to a disk space consumption over time.

It's suggested to delete this folders at least at server start-up. Current solution with `clearOldTemporaryDirectories()` doesn't work because this method is called periodically from a thread without any locks or advisory on folders - it may cause the race conditions.
{
    auto policy = getStoragePolicy();
    if (move_ttl.destination_type == DataDestinationType::VOLUME)
    {
        auto volume = policy->tryGetVolumeByName(move_ttl.destination_name);
        if (!volume)
            return {};
        if (is_insert && !volume->perform_ttl_move_on_insert)
            return {};
        return volume;
    }
    else if (move_ttl.destination_type == DataDestinationType::DISK)
    {
        auto disk = policy->tryGetDiskByName(move_ttl.destination_name);
        if (!disk)
            return {};
        auto volume = policy->getVolume(policy->getVolumeIndexByDisk(disk));
        if (!volume)
            return {};
        if (is_insert && !volume->perform_ttl_move_on_insert)
            return {};
        return disk;
    }
    else
        return {};
}
bool MergeTreeData::isPartInTTLDestination(const TTLDescription & ttl, const IMergeTreeDataPart & part) const