Updated with the PR feedback

ShaderGraph/com.unity.shadergraph/Editor/Data/Graphs/AbstractMaterialGraph.cs

             set { m_PreviewData = value; }
         }
 
-        [NonSerialized]
-        string m_Name;
         public string name { get; set; }
 
         [SerializeField]

ShaderGraph/com.unity.shadergraph/Editor/Drawing/MaterialGraphEditWindow.cs

 using UnityEditor.Graphing.Util;
 using UnityEngine;
 using UnityEditor.Graphing;
-using UnityEditorInternal;
 using Debug = UnityEngine.Debug;
 using Object = UnityEngine.Object;
 using Edge = UnityEditor.Experimental.UIElements.GraphView.Edge;

ShaderGraph/com.unity.shadergraph/Editor/Drawing/Views/MaterialNodeView.cs

         {
             if (evt.target is Node)
             {
-                evt.menu.AppendAction("Copy shader", CopyToClipboard, node.hasPreview ? ContextualMenu.MenuAction.StatusFlags.Normal : ContextualMenu.MenuAction.StatusFlags.Hidden);
+                evt.menu.AppendAction("Copy Shader", CopyToClipboard, node.hasPreview ? ContextualMenu.MenuAction.StatusFlags.Normal : ContextualMenu.MenuAction.StatusFlags.Hidden);
                 evt.menu.AppendAction("Show Generated Code", ShowGeneratedCode, node.hasPreview ? ContextualMenu.MenuAction.StatusFlags.Normal : ContextualMenu.MenuAction.StatusFlags.Hidden);
             }