test: add missing test coverage for setLocalAddress()

Add missing coverage for setLocalAddress() method of dns.Resolver class.
The case where a valid IPv4 argument was supplied along with an invalid
IPv6 argument was not being checked.

Refs: https://coverage.nodejs.org/coverage-85b42af4398073f8/lib/internal/dns/utils.js.html#L124

PR-URL: https://github.com/nodejs/node/pull/36039


Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>