Fix NullReferenceException on subsequent runs

VisualPinball.Unity/VisualPinball.Unity/Game/PhysicsEngine.cs

@@ -49,7 +49,7 @@ public class PhysicsEngine : MonoBehaviour
 		[NonSerialized] private NativeColliders _kinematicCollidersAtIdentity;
 		[NonSerialized] private NativeParallelHashMap<int, NativeColliderIds> _kinematicColliderLookups;
 		[NonSerialized] private NativeArray<PhysicsEnv> _physicsEnv = new(1, Allocator.Persistent);
-		[NonSerialized] private NativeQueue<EventData> _eventQueue = new(Allocator.Persistent);
+		[NonSerialized] private NativeQueue<EventData> _eventQueue;
 
 		[NonSerialized] private NativeParallelHashMap<int, BallState> _ballStates = new(0, Allocator.Persistent);
 		[NonSerialized] private NativeParallelHashMap<int, BumperState> _bumperStates = new(0, Allocator.Persistent);
@@ -170,6 +170,7 @@ internal void DisableCollider(int itemId)
 
 		private void Awake()
 		{
+			_eventQueue = new(Allocator.Persistent);
 			_player = GetComponentInParent<Player>();
 			_insideOfs = new InsideOfs(Allocator.Persistent);
 			_physicsEnv[0] = new PhysicsEnv(NowUsec, GetComponentInChildren<PlayfieldComponent>(), GravityStrength);