fix(loop): remove forced X11, keep --no-sandbox

Revert the --ozone-platform=x11 flag since the user prefers native
Wayland. The flag was added to work around a zxdg_exporter_v1
Wayland protocol crash in Electron, but forcing X11 is not
acceptable for Wayland users. Keep --no-sandbox for NixOS store
compatibility.

packages/loop/package.nix

@@ -131,7 +131,6 @@ EOF
     wrapProgram $out/bin/loop \
       --prefix PATH : ${glib.bin}/bin \
       --prefix LD_LIBRARY_PATH : $out/share/loop \
-      --add-flags "--ozone-platform=x11" \
       --add-flags "--no-sandbox"
   '';