Add an Authenticator Assurance Level toggle for impersonating users in Studio (#28332)
* Add AAL2 toggle for user impersonation
* Move AAL toggle into user selector & tweak styles
- Since the AAL level can only be toggled before a user is selected, move the toggle into the user selection area
- Also display the AAL status in the UserImpersonatingRow and the RoleImpersonationPopover
- Improve display styles
* Run prettier
* - fixes light mode text issue
- adds "Advanced options" collapsible
- adds info tooltip linking to MFA docs
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Co-authored-by: Alaister Young <alaister@users.noreply.github.com>
Co-authored-by: Alaister Young <a@alaisteryoung.com>