fix: DataNodeHolder visualization

Author: serg.morozov

Assets/com.nuclearband.sodatabase/Editor/ScriptableObjectDatabaseEditorWindow.cs

@@ -225,7 +225,7 @@ protected override void OnBeginDrawEditors()
                     path += string.IsNullOrEmpty((MenuTree.Selection.SelectedValue as Holder)!.Path) ? string.Empty : (MenuTree.Selection.SelectedValue as Holder)!.Path + "/";
                 if (MenuTree.Selection.SelectedValue is FolderHolder folderHolder)
                     path += folderHolder.Name + "/";
-                path = path.Substring(0, path.Length - 1);
+                path = path[..^1];
                 if (SirenixEditorGUI.ToolbarButton(new GUIContent("Create DataNode")))
                     DataNodeCreator.ShowDialog<DataNode>(path, TrySelectMenuItemWithObject);
 

Assets/com.nuclearband.sodatabase/Runtime/Holders/DataNodeHolder.cs

@@ -7,7 +7,7 @@ namespace Nuclear.SODatabase
 {
     internal class DataNodeHolder : Holder
     {
-        [InlineEditor(InlineEditorObjectFieldModes.CompletelyHidden)] internal DataNode DataNode;
+        [InlineEditor(InlineEditorObjectFieldModes.CompletelyHidden)] [ShowInInspector] internal DataNode DataNode;
 
         internal DataNodeHolder(string path, string name, DataNode dataNode) : base(path, name) => DataNode = dataNode;