menu (navigation drawer) should not be traversable with keyboard when not shown

[userquin]

Describe the bug

When the menu is not shown (narrow screens), it shouldn't be traversable via keyboard tab.

Once the menu is shown, should have a focus trap: the tab key will traverse again the content (after a few tabs, the menu entries are traversed). The menu should trap the focus, and select the current entry once activated.

Reproduction

Open VitePress docs, resize the browser window and use the keyboard tab key.

Expected behavior

Menu shouldn't be traversable.

System Info

NA

Additional context

No response

Validations

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• [X] Read the docs.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.