build: re-enable openssl arm for arm64

In #23913 it looked like arm64 testing was flaky, and as a result a
number of changes were made including disabling openssl asm for that
architecture.

This PR is limited to re-enabling the one change to turn on openssl asm
for arm64, in the hopes that either it works now, or that this specific
change introduces a reproducible condition.

See: https://github.com/nodejs/node/pull/23913

PR-URL: https://github.com/nodejs/node/pull/28180


Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>