Make Account Menu Usable With Keyboard Input

Currently, the account menu is not usable with keyboard input. Focus should be on the first element of the menu when it's opened, you should be able to navigate it with a keyboard and information should be read out by a screen reader.

<img width="257" height="216" alt="Image" src="https://github.com/user-attachments/assets/072b9edd-1d1c-4ab7-b30f-5bfa6c34471e" />