nested TemplateContainer

[wonho-lee-movin3d]

I`m working on MacOS editor 6000.0.43f1, and built-in ContextualMenuManipulator seems not working.
This repo is the only solution for now, Thanks for your work.

private VisualElement GetElementRoot(VisualElement visualElement)
{
    VisualElement result = null;
    for (; visualElement != null; visualElement = visualElement.hierarchy.parent)
    {
        if (visualElement is TemplateContainer)
        {
            result = visualElement;
            break;
        }
    }
    return result;
}

FYI
But your ContextualMenuManager finds wrong root under instances from Template, like items in ListView.
So I overrided ContextualMenuManager and passed it to ContextualMenuManipulator constructor.