bug#69739: 30.0.50; `type-of` is not precise enough

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: 69739@debbugs.gnu.org
> Date: Thu, 14 Mar 2024 12:56:03 -0400
> 
> OK, here's a new patch.
> I ended up with `cl-type-of` as the name of the new function (after
> all, it tries to better match the expected semantics of Common Lisp's
> `type-of`).
> 
> Comments?  Objections?

Should we document this new function in the ELisp manual?