spotify: fix wayland when NIXOS_OZONE_WL is set

This patch adds a runtime fix to the spotify wrapper to
unset DISPLAY when NIXOS_OZONE_WL is set.

See https://wiki.archlinux.org/title/Spotify#Running_under_Wayland
Resolves #531950

pkgs/by-name/sp/spotify/linux.nix

@@ -240,7 +240,7 @@ stdenv.mkDerivation (finalAttrs: {
       } \
       --prefix LD_LIBRARY_PATH : "$librarypath" \
       --prefix PATH : "${zenity}/bin" \
-      --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--enable-features=UseOzonePlatform --ozone-platform=wayland --enable-wayland-ime=true}}"
+      --run 'if [[ "''${NIXOS_OZONE_WL:-default}" == "1" ]]; then unset DISPLAY; fi'
 
     runHook postFixup
   '';