LG-10011: Redirect to MFA selection page

[mdiarra3]

🎫 Ticket

LG-10011

🛠 Summary of changes

This will redirect users to MFA selection page on using the personal key. Content needs to be updated

[aduth]

Since legacy personal key MFA is not available for new accounts, I think it'd be helpful to include testing instructions. #8531 might be an example to draw from, or ideally there's an easier way to set this up.

[aduth]

#8531 might be an example to draw from, or ideally there's an easier way to set this up.

Actually, I found a much easier way, based on the specs for this controller:

In rails console:

# replace email for local user
PersonalKeyGenerator.new(User.find_with_email('email@example.com')).create

(which prints out the generated personal key)

[aduth]

Tested and LGTM 👍