The `if` statement is no longer necessary because the Node.js versions
that didn't provide `dns.setDefaultResultOrder` are no longer supported,
but looking into this a bit more it turns out that the entire workaround
is no longer necessary because the issue got fixed in Firefox 105 in bug
1769994. Indeed, Firefox now starts nicely with the workaround removed.
Reverts 60ed3cd297c4045b90f4114a74e5baa4ef1c5056.