The LRR dialog's Continue step: fetches the recovery challenge picker
(ap.two_step_verification.challenge_picker) with the dialog action's
server_params verbatim, as the app does when the user taps Continue.
A data fetch only: it does not navigate, and it never fails on its own —
an empty challenges list (or a missing selectionServerParams) is left
for the caller to interpret.
The LRR dialog's Continue step: fetches the recovery challenge picker (
ap.two_step_verification.challenge_picker) with the dialog action'sserver_paramsverbatim, as the app does when the user taps Continue.A data fetch only: it does not navigate, and it never fails on its own — an empty
challengeslist (or a missingselectionServerParams) is left for the caller to interpret.