bug#65802: 29.1; Emacs fails to recognise Hyper under Wayland (KDE)

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: post+emacs@guelker.eu,  65802@debbugs.gnu.org
> Date: Fri, 08 Sep 2023 15:14:16 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Does this problem happen only in GTK3, and is absent from GTK4?
> 
> I believe so.  However, porting from GTK3 to GTK4 is not a trivial
> job...

Thanks, I added this to PROBLEMS.  Please see that what I wrote is
factually correct, and fix if needed.