fix(store): fix listenAlong statement

Author: JellyBrick

src/config/store.ts

@@ -21,8 +21,9 @@ const setDefaultPluginOptions = (store: Conf<Record<string, unknown>>, plugin: k
 
 const migrations = {
   '>=2.1.3'(store: Conf<Record<string, unknown>>) {
-    if (store.get('plugins.discord.listenAlong')) {
-      store.set('plugins.discord.playOnYouTubeMusic', true);
+    const listenAlong = store.get('plugins.discord.listenAlong');
+    if (listenAlong !== undefined) {
+      store.set('plugins.discord.playOnYouTubeMusic', listenAlong);
       store.delete('plugins.discord.listenAlong');
     }
   },