Related: #23207

Right now when you use the new Navigation screen to create a new menu, you are shown the Navigation block's placeholder which prompts you to create from an existing WordPress menu. This list contains the menu that you just created.

Could we simplify this flow for the most common case which is creating a new empty menu?

Initial placeholder state:

On selection of the nav block:

As recommended (#28124 (comment)) it could look like this: