[gnome-shell-extensions] classic: Add X-GNOME-SessionRegisters

[Marge Bot <marge-bot src gnome org>]

commit a79d2afb2d6119ae3a4d1eba020d6c35b3fece23
Author: Neal Gompa <ngompa fedoraproject org>
Date:   Fri Oct 29 09:33:06 2021 -0400

    classic: Add X-GNOME-SessionRegisters
    
    GDM has supported sessions registering with it for a few years now so
    it can know when to shut down the greeter. Having the GNOME Classic
    session declare that it will register itself allows GDM to avoid
    executing a fallback codepath.
    
    This has been supported with the regular GNOME session for a while,
    and this session was likely forgotten about when it was added there.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/195>

 data/gnome-classic.desktop.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/gnome-classic.desktop.in b/data/gnome-classic.desktop.in
index 5df6821..13da2b5 100644
--- a/data/gnome-classic.desktop.in
+++ b/data/gnome-classic.desktop.in
@@ -5,3 +5,4 @@ Exec=env GNOME_SHELL_SESSION_MODE=classic gnome-session
 TryExec=gnome-session
 Type=Application
 DesktopNames=GNOME-Classic;GNOME;
+X-GDM-SessionRegisters=true