fix: fixing scene objects not being removed from NetworkWorld

Assets/Mirage/Runtime/ClientObjectManager.cs

@@ -413,6 +413,9 @@ private void ThrowIfExists(int prefabHash, NetworkIdentity newPrefab = null)
 
         private void UnSpawn(NetworkIdentity identity)
         {
+            // have to store netid, so we can remove it from world, this is because NetworkReset will clear it
+            var netId = identity.NetId;
+
             logger.Assert(!_client.IsLocalClient, "UnSpawn should not be called in host mode");
             // it is useful to remove authority when destroying the object
             // this can be useful to clean up stuff after a local player is destroyed
@@ -437,7 +440,7 @@ private void UnSpawn(NetworkIdentity identity)
                 spawnableObjects[identity.SceneId] = identity;
             }
 
-            _client.World.RemoveIdentity(identity);
+            _client.World.RemoveIdentity(netId);
         }
 
         /// <summary>