test: fix warnings in addon tests

The legacy MakeCallback deprecation was resulting in compile time
warnings in adddon tests. Fix them.

Ref: https://github.com/nodejs/node/pull/18632

PR-URL: https://github.com/nodejs/node/pull/18810
Refs: https://github.com/nodejs/node/pull/18632


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>