util: escape symbol and non-enumerable keys

These keys require escaping as they might also contain line breaks
and other special characters.

PR-URL: https://github.com/nodejs/node/pull/22300


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>