worker: set trackUnmanagedFds to true by default

This prevents accidental resource leaks when terminating or exiting
Worker that own FDs opened through `fs.open()`.

Refs: https://github.com/nodejs/node/pull/34303

PR-URL: https://github.com/nodejs/node/pull/34394


Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>