Some more renamigs for making it more closer to unity's naming

Author: Extrys

com.unity.netcode.gameobjects/Runtime/Core/NetworkObject.cs

@@ -2981,7 +2981,7 @@ public void Serialize(FastBufferWriter writer)
 
                 if (HasInstantiationPayload)
                 {
-                    if (NetworkManager.Singleton.PrefabHandler.TryGetPrefabInstanceHandlerWithData(Hash, out INetworkPrefabInstanceHandlerWithData synchronizer))
+                    if (NetworkManager.Singleton.PrefabHandler.TryGetHandlerWithData(Hash, out INetworkPrefabInstanceHandlerWithData synchronizer))
                         synchronizer.OnSynchronizeInstantiationData(ref bufferSerializer);
                 }
 
@@ -3162,7 +3162,7 @@ internal SceneObject GetMessageSceneObject(ulong targetClientId = NetworkManager
                 Hash = CheckForGlobalObjectIdHashOverride(),
                 OwnerObject = this,
                 TargetClientId = targetClientId,
-                HasInstantiationPayload = NetworkManager.PrefabHandler.HasPayloadSynchronizer(GlobalObjectIdHash),
+                HasInstantiationPayload = NetworkManager.PrefabHandler.ContainsHandlerWithData(GlobalObjectIdHash),
             };
 
             // Handle Parenting
@@ -3232,7 +3232,7 @@ internal static NetworkObject AddSceneObject(in SceneObject sceneObject, FastBuf
             //Synchronize the instantiation payload if needed
             if (sceneObject.HasInstantiationPayload)
             {
-                if (NetworkManager.Singleton.PrefabHandler.TryGetPrefabInstanceHandlerWithData(sceneObject.Hash, out INetworkPrefabInstanceHandlerWithData handler))
+                if (NetworkManager.Singleton.PrefabHandler.TryGetHandlerWithData(sceneObject.Hash, out INetworkPrefabInstanceHandlerWithData handler))
                 {
                     var instantiationPayloadBufferReader = new BufferSerializer<BufferSerializerReader>(new BufferSerializerReader(reader));
                     handler.OnSynchronizeInstantiationData(ref instantiationPayloadBufferReader);

com.unity.netcode.gameobjects/Runtime/Spawning/NetworkPrefabHandler.cs

@@ -231,15 +231,15 @@ public bool RemoveHandler(uint globalObjectIdHash)
         /// </summary>
         /// <param name="objectHash"></param>
         /// <returns></returns>
-        internal bool HasPayloadSynchronizer(uint objectHash) => TryGetPrefabInstanceHandlerWithData(objectHash, out _);
+        internal bool ContainsHandlerWithData(uint objectHash) => TryGetHandlerWithData(objectHash, out _);
 
         /// <summary>
         /// Returns the <see cref="INetworkPrefabInstanceHandlerWithData"/> implementation for a given <see cref="NetworkObject.GlobalObjectIdHash"/>
         /// </summary>
         /// <param name="objectHash"></param>
         /// <param name="handler"></param>
         /// <returns></returns>
-        internal bool TryGetPrefabInstanceHandlerWithData(uint objectHash, out INetworkPrefabInstanceHandlerWithData handler)
+        internal bool TryGetHandlerWithData(uint objectHash, out INetworkPrefabInstanceHandlerWithData handler)
         {
             if (m_PrefabAssetToPrefabHandler.TryGetValue(objectHash, out var prefabInstanceHandler))
             {