Nope, GNOME Classic and GNOME Classic Xorg are preinstalled.

From: Neal Gompa <ngompa13@gmail.com>
Sent: Wednesday, April 6, 2022 11:40 PM
To: Qing Kai Zhu <qkzhu@suse.com>
Cc: factory@lists.opensuse.org <factory@lists.opensuse.org>
Subject: Re: SLE-Classic is deprecated in openSUSE Tumbleweed (GNOME 42)

On Wed, Apr 6, 2022 at 11:35 AM Qing Kai Zhu <qkzhu@suse.com> wrote:
>
> Do you mean GNOME Classic? It is already in gnome-shell-extensions, you can choose it in gdm greeter.

Yes, that's what I mean. IIRC, we don't preinstall it like we do SLE-Classic.

--
真実はいつも一つ！/ Always, there's only one truth!