test: allow EAI_FAIL in test-http-dns-error.js

EAI_FAIL is expected on OpenBSD, and has been observed on
platforms such as FreeBSD and Windows. This commit makes
EAI_FAIL an acceptable error code on all platforms.

PR-URL: https://github.com/nodejs/node/pull/27500
Fixes: https://github.com/nodejs/node/issues/27487


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>