[mat graph]Fix subgraphnode always regenerating the graph + fix exception on port adaptor

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Editor/Drawing/DrawData/AnchorDrawData.cs

 {
     internal static class MyNodeAdapters
     {
-        internal static bool Adapt(this NodeAdapter value, PortSource<int> a, PortSource<int> b)
-        {
-            // run adapt code for int to int connections
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<float> a, PortSource<float> b)
-        {
-            // run adapt code for float to float connections
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<int> a, PortSource<float> b)
-        {
-            // run adapt code for int to float connections, perhaps by insertion a conversion node
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<Vector3> a, PortSource<Vector3> b)
-        {
-            // run adapt code for vec3 to vec3 connections
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<Color> a, PortSource<Color> b)
-        {
-            // run adapt code for Color to Color connections
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<Vector3> a, PortSource<Color> b)
-        {
-            // run adapt code for vec3 to Color connections
-            return true;
-        }
-
-        internal static bool Adapt(this NodeAdapter value, PortSource<Color> a, PortSource<Vector3> b)
-        {
-            // run adapt code for Color to vec3 connections
-            return true;
-        }
         internal static bool Adapt(this NodeAdapter value, PortSource<Vector4> a, PortSource<Vector4> b)
         {
             return true;

MaterialGraphProject/Assets/UnityShaderEditor/Runtime/SubGraph/SubGraphNode.cs

             }
             set
             {
+                if (subGraphAsset == value)
+                    return;
+                    
                 var helper = new SubGraphHelper();
                 helper.subGraph = value;
                 m_SerializedSubGraph = EditorJsonUtility.ToJson(helper, true);

MaterialGraphProject/Assets/NewUI/Editor/Demo/GraphElements.meta

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MaterialGraphProject/Assets/NewUI/Editor/Graph.meta

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MaterialGraphProject/Assets/NewUI/Editor/GraphElements.meta

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MaterialGraphProject/Assets/Plugins.meta

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