Automatically focus the security key authentication button after entering password

I have a security key configured for my Discourse accounts. After entering the password, there’s a prompt with a button to authenticate with my security key.

It’s only upon clicking on that button the security key authentication flow triggers. It’d be a nice improvement to automatically highlight (not asking to automatically initiate the authentication flow) the button, so that I can just click on the Enter key to initiate the authentication flow.

GitHub does it: