Navigation: Block toolbar obscures submenu items when Navigation block is at top of editor

[noisysocks]

Description

If the Navigation block is at the top of the editor then it's really difficult to edit submenus because the block toolbar obscures the submenu.

Step-by-step reproduction instructions

1. Install and activate Emptytheme, or use the Create Block Theme plugin to create a new empty theme.
2. Go to Appearance → Editor and edit the default template.
3. Insert a Navigation block into the first position in the header template part.
4. Edit the Navigation block and add a submenu to one of the navigation items.
5. Try to edit the submenu.

Screenshots, screen recording, code snippet

Kapture.2024-06-04.at.11.43.41.mp4

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[talldan]

I think this was already reported in #40382.

Seems like a tricky one to fix!

[noisysocks]

Aha! I was searching for that. Thanks.