无法将TabControl绑定到ObservableCollection

public class CustomTabControl : TabControl
{
    public static readonly DependencyProperty ItemsSourceProperty =
        DependencyProperty.Register("ItemsSource", typeof(ObservableCollection<object>), typeof(CustomTabControl), new PropertyMetadata(null, OnItemsSourceChanged));

    public ObservableCollection<object> ItemsSource
    {
        get { return (ObservableCollection<object>)GetValue(ItemsSourceProperty); }
        set { SetValue(ItemsSourceProperty, value); }
    }

    private static void OnItemsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var tabControl = (CustomTabControl)d;
        tabControl.Items.Clear();

        if (e.NewValue is ObservableCollection<object> collection)
        {
            foreach (var item in collection)
            {
                tabControl.Items.Add(item);
            }

            collection.CollectionChanged += (sender, args) =>
            {
                if (args.Action == NotifyCollectionChangedAction.Add)
                {
                    foreach (var newItem in args.NewItems)
                    {
                        tabControl.Items.Add(newItem);
                    }
                }
                else if (args.Action == NotifyCollectionChangedAction.Remove)
                {
                    foreach (var oldItem in args.OldItems)
                    {
                        tabControl.Items.Remove(oldItem);
                    }
                }
            };
        }
    }
}

<local:CustomTabControl ItemsSource="{Binding MyCollection}">
    <!-- 子项的定义 -->
</local:CustomTabControl>