test: use error code mapping in place of raw errno

Refs: https://github.com/nodejs/node/pull/38159#discussion_r610288214

PR-URL: https://github.com/nodejs/node/pull/38675


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>