Fix multiplayer in background

Assets/Scripts/GamePlayers/MultiplayerGamePlayer.cs

@@ -48,6 +48,7 @@ public class MultiplayerGamePlayer : MonoBehaviour {
     internal bool IsGrounded() => Physics2D.Distance(bird.GetComponent<CircleCollider2D>(), groundCollider).distance <= 0.1f;
 
     void Awake() {
+        Application.runInBackground = true;
         Instance = this;
         bird = Instantiate(birdTemplate).GetComponent<Image>();
         Destroy(bird.transform.GetChild(1).gameObject);
@@ -454,6 +455,7 @@ public class MultiplayerGamePlayer : MonoBehaviour {
     public async void Disconnect() {
         if (disconnecting) return;
         disconnecting = true;
+        Application.runInBackground = false;
         Cursor.visible = true;
         Cursor.lockState = CursorLockMode.None;
         if (WebsocketHandler.Instance._Connection.State == WebSocketState.Connected) {