util: inspect all prototypes

It is currently difficult to distinguish multiple objects from each
other because the prototype is not properly inspected. From now on
all prototypes will be inspected, even if we do not fully know how
they will look like / what their shape really is.

PR-URL: https://github.com/nodejs/node/pull/24974
Fixes: https://github.com/nodejs/node/issues/24917


Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>