fix: fixed several wallpaper enginer related issues

apps/showcase/src/components/aklive2d.js

@@ -221,15 +221,14 @@ export default class AKLive2D {
         ])
 
         this.#music.link(this.#background)
-        this.#background.link(this.#music)
         this.#voice.link(this.#player)
+        this.#applyConfig()
+
         this.#player.success()
         this.#voice.success()
         this.#music.success()
         this.#insight.success()
 
-        this.#applyConfig()
-
         if (
             this.#queries.has('aklive2d') ||
             import.meta.env.MODE === 'development'