\XFI\Import\Importer\vBulletin4::getContentTypeId() does not respect packageid

[Kirby]

Affected version

1.4.1

protected function getContentTypeId($contentType)
{
    if (empty($this->session->extra['contentTypeId']))
    {
        $this->session->extra['contentTypeId'] = $this->sourceDb->fetchPairs("
            SELECT class, contenttypeid
            FROM contenttype
        ");
    }

    return $this->session->extra['contentTypeId'][$contentType];
}

This code does assume that field class in table contenttype is unique - this is not necessarily the case, it is only guaranteed to be unique for the package the contenttype does belong to (field packageid).

A correct/fully qualified contenttype would be vBForum:Post, not just Post.