bug#62528: 28.2; Emacsclient doesn't use COLORTERM

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: vojtech@balak.me,  62528@debbugs.gnu.org
> Date: Thu, 30 Mar 2023 14:11:29 +0200
> 
> >>>>> On Thu, 30 Mar 2023 13:36:06 +0300, Eli Zaretskii <eliz@gnu.org> said:
> 
>     Eli> More importantly, I don't think we want
>     Eli> to have such different color capabilities on different frames in the
>     Eli> same Emacs session, that will cause many problems we don't want to
>     Eli> touch with a 3-mile pole.
> 
> Thatʼs a situation we already have, since those color capabilities are
> derived from the terminal where emacsclient is invoked anyway.

But COLORTERM disregards terminfo, so it's much more dangerous.