Look into focus issue with drawer + nav tabs

[silvalaura]

In the magma docs, when the hamburger menu is clicked (small screens), the focus should immediately be on the first item on the list (Introduction). Instead, the user has to click "tab" once for the focus to get on the drawer and then tab through the list of options.

We should look into this, as it may help us find a solution for adopters who can replicate this issue.