bug#54242: Emacs can't display animated webp images

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: 54242@debbugs.gnu.org
> Date: Sun, 10 Apr 2022 16:32:56 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > This one doesn't flicker at all.
> 
> Does Windows use the native image support for GIFs, perhaps?

It does, but I tested both with native APIs and with libgif, and none
of them flickers.