util: add subclass and null prototype support for errors in inspect

This adds support to visualize the difference between errors with
null prototype or subclassed errors. This has a couple safeguards
to be sure that the output is not intrusive.

PR-URL: https://github.com/nodejs/node/pull/26923


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>