Add do not fix quit flag

Electron is quite unoptimised technology and running YM window in
foreground requires a lot of cpu usage. So hiding window to background
is more feature, then bug =)

Change-Id: Id4e00303379004b6353a88efd7232e180f80fe6d

flake.nix

@@ -20,6 +20,9 @@
         {
           packages = rec {
             yandex-music = yandex-music-with pkgs;
+            yandex-music-backgroud = yandex-music.override {
+              fixQuit = false;
+            };
             default = yandex-music;
           };
         }