Email 2FA verfication - FE followup

[RachelElysia]

Follow up to track final updates needed for #22789

• integrate with API
• wire the /login/expired and login/2fa pages correctly
• add email address from api to the login/2fa page
  - [ ] hear back from product/design on radio button help text (github comment) @rachaelshaw said this might take a bit to determine (1:30 est 12/5/24)
  - [ ] remove commented out help text on radio button if needed ^ see above
  - [ ] hear back from product/design about scrollable modal design decision (slack) @marko-lisica added it to weekly design sync agenda
  - [ ] update validation pattern if capacity allows

[lucasmrod]

@sharon-fdm This change doesn't look fleetd related, should this have the 4.61.0 milestone?

[jmwatts]

@RachelElysia is this a subtask of #22078? Is there anything specific that should be tested for this ticket that wasn't covered in #22078?

[lukeheath]

@sharon-fdm Wrong milestone on this one, I corrected.

[sharon-fdm]

Thanks @lucasmrod and @lukeheath. I set the milestone by mistake.

[fleet-release]

Two-factor secure,
Like a cloud city's locked door,
Peace for data pure.