test: ignore connection errors for hostname check

Follow up to https://github.com/nodejs/node/pull/14065 Be more explicit about why we don't care about errors

/cc @trott @nodejs/testing

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

test