Description

On mobile viewports List View doesn't have a close button, so there's probably no way of closing it.

Usually this wouldn't be too much of an issue, as there's no way to open List View on mobile viewports. But if a user has the 'Always open List View' preference enabled, List View fills the whole screen when entering the editor and there's no way to get rid of it, essentially making the editor unusuable

The tabs also look a little buggy visually.

Step-by-step reproduction instructions

1. Open the post editor
2. Enable the 'Always open List View' preference.
3. Resize your browser to mobile size
4. Refresh

Expected: There's a way to close List View AND/OR List View doesn't show on mobile viewports
Actual: There's no close button and List View fills the whole screen 😱

Screenshots, screen recording, code snippet

Environment info

Latest WordPress trunk (with or without the Gutenberg plugin active at latest trunk)
Discovered using Brave / Mac OS

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