fix(lavalink): Update Lavalink configuration and enhance healthcheck with plugin management

src/structures/ShoukakuEvents.js

@@ -102,9 +102,12 @@ class MusicPlayer {
 
                 // Destroy the player and disconnect
                 destroy() {
-                    this.client.shoukaku.leaveVoiceChannel(this.guild);
-                    musicPlayer.players.delete(this.guild);
-                    return this;
+                    // Use the main Shoukaku instance to leave the channel
+                    this.client.shoukaku.leaveVoiceChannel(this.guild); 
+                    // Remove the player instance from the manager's map
+                    musicPlayer.players.delete(this.guild); 
+                    logger.debug(`Destroyed player for guild ${this.guild}`);
+                    return this; // Return this for potential chaining, though unlikely needed here
                 },
 
                 // Add a track to the queue or play it if nothing is playing