HUB-545: Hide IDPs from picker 30 mins before disconnecting for registration
HUB-545: Hide IDPs from picker 30 mins before disconnecting for registration

We now know that most people don't spend more than 30 mins on the picker page so extending the hiding period to 30 mins should prevent broken journeys when disconnecting IDPs.

alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend