Fix breaking change in MenuItemList

Author: nul800sebastiaan

src/Umbraco.Core/Trees/MenuItemList.cs

@@ -24,6 +24,17 @@ public MenuItemList(ActionCollection actionCollection, IEnumerable<MenuItem> ite
         : base(items) =>
         _actionCollection = actionCollection;
 
+    /// <summary>
+    ///     Adds a menu item with a dictionary which is merged to the AdditionalData bag
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    /// <param name="hasSeparator"></param>
+    /// <param name="textService">The <see cref="ILocalizedTextService" /> used to localize the action name based on its alias</param>
+    /// <param name="opensDialog">Whether or not this action opens a dialog</param>
+    /// <param name="useLegacyIcon">Whether or not this action should use legacy icon prefixed with "icon-" or full icon name is specified.</param>
+    public MenuItem? Add<T>(ILocalizedTextService textService, bool hasSeparator = false, bool opensDialog = false)
+        where T : IAction => Add<T>(textService, hasSeparator, opensDialog, useLegacyIcon: true);
+
     /// <summary>
     ///     Adds a menu item with a dictionary which is merged to the AdditionalData bag
     /// </summary>
@@ -35,7 +46,7 @@ public MenuItemList(ActionCollection actionCollection, IEnumerable<MenuItem> ite
     public MenuItem? Add<T>(ILocalizedTextService textService, bool hasSeparator = false, bool opensDialog = false, bool useLegacyIcon = true)
         where T : IAction
     {
-        var item = CreateMenuItem<T>(textService, hasSeparator, opensDialog);
+        MenuItem? item = CreateMenuItem<T>(textService, hasSeparator, opensDialog, useLegacyIcon);
         if (item != null)
         {
             Add(item);