Nested menus stay open after focus moves to another MenuItem

[dominoweir]

Issue:

When you use your keyboard to navigate through a nested menu item, then return to the parent menu and move on in the focus order, the nested menu stays open even though its parent no longer has focus. This isn't so bad if you only have one nested menu in the list of menu items, but it gets pretty cluttered when you have many nested menu items.

Screenshot:

This can be reproduced live on the vercel app for this project as well.