[v9.x backport] tools, test: fix prof polyfill readline

Backport of #18641 to v9.x, with only trivial conflicts.

Refs: https://github.com/nodejs/node/pull/18641

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)

tools, test