Navigation Link block uses incorrect classname for nested submenu

[talldan]

Describe the bug
The Navigation block uses a Navigation Link inner block and each Navigation Link can also have child Navigation Links to create sub-menus, e.g.:

- Navigation
  '- Navigation Link
      '- Navigation Link

However when building a deeply nested navigation block and checking the class names used in a post, an incorrect wp-block-navigation__container class is used within wp-block-navigation-link:

This can also be seen in the Navigation Link's edit function where an incorrect wp-block-navigation__container class is used:
https://github.com/WordPress/gutenberg/blob/master/packages/block-library/src/navigation-link/edit.js#L300

This should be easier to solve in both places once #21075 is merged.

To reproduce
Steps to reproduce the behavior:

1. Build a deeply nested navigation block
2. Preview the post
3. Observe the incorrect class names when inspecting a nested menu

Expected behavior
The wp-block-navigation__container should be changed to wp-block-navigation-link__container.

[jasmussen]

This should be easier to solve in both places once #21075 is merged.

Since that one is merged now, is it time to revisit this one?