test: add test for `worker.terminate()` + timeout fns

PR-URL: https://github.com/nodejs/node/pull/25735


Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>