bs-manager: set ELECTRON_FORCE_IS_PACKAGED

This is needed so that the app thinks it's in a packaged state, even if
using the source builds of electron. Once electron-bin gets
restructured, even using that will need this env var to be set.

pkgs/by-name/bs/bs-manager/package.nix

@@ -65,6 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
 
     mkdir -p $out/bin
     makeWrapper ${lib.getExe electron} $out/bin/bs-manager \
+      --set-default ELECTRON_FORCE_IS_PACKAGED 1 \
       --add-flags $out/opt/BSManager/resources \
       --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations --enable-wayland-ime=true}}" \
       --inherit-argv0