NetworkList Equal Check

Author: harayuu9

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

@@ -618,6 +618,12 @@ public T this[int index]
                 }
 
                 var previousValue = m_List[index];
+
+                if (previousValue.Equals(value))
+                {
+                    return;
+                }
+
                 m_List[index] = value;
 
                 var listEvent = new NetworkListEvent<T>()