Set the default value of order in lookup and dnsPromises.lookup(). The value could be:

• ipv4first: sets default order to ipv4first.
• ipv6first: sets default order to ipv6first.
• verbatim: sets default order to verbatim.

The default is verbatim and setDefaultResultOrder have higher priority than --dns-result-order. When using worker threads, setDefaultResultOrder from the main thread won't affect the default dns orders in workers.