Alter search export ordering
Alter search export ordering

It is easier and faster to just do things in different processes. We
can then merge everything back together at the end. This speeds up the
initial metadata fetching quite a bit despite the limited maxForks.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline