fix

Fixing the issue with the missing `OnSpawned` override within `NetworkVariable`.

Author: NoelStephensUnity

com.unity.netcode.gameobjects/Runtime/NetworkVariable/NetworkVariable.cs

@@ -407,5 +407,11 @@ internal override void WriteFieldSynchronization(FastBufferWriter writer)
                 base.WriteFieldSynchronization(writer);
             }
         }
+
+        internal override void OnSpawned()
+        {
+            m_NetworkBehaviour.PostNetworkVariableWrite(true);
+            base.OnSpawned();
+        }
     }
 }