SW-19168 - Change orderBy parameter to optional
SW-19168 - Change orderBy parameter to optional

Fixes https://github.com/shopware/shopware/pull/1164

simkli/shopware,k10r/shopware,jochenmanz/shopware,jochenmanz/shopware,jhit/shopware,egoistIT/shopware,jhit/shopware,oktupol/shopware,oktupol/shopware,jhit/shopware,philippmahlow/shopware,simkli/shopware,philippmahlow/shopware,philippmahlow/shopware,jochenmanz/shopware,philippmahlow/shopware,jochenmanz/shopware,oktupol/shopware,egoistIT/shopware,oktupol/shopware,jochenmanz/shopware,philippmahlow/shopware,k10r/shopware,simkli/shopware,jhit/shopware,k10r/shopware,simkli/shopware,egoistIT/shopware,k10r/shopware,oktupol/shopware,jhit/shopware,k10r/shopware,egoistIT/shopware,egoistIT/shopware,simkli/shopware