To simplify reauth management, require reauthentication every time Special:OATHManage is viewed or any action is taken.
Currently, adding an auth method requires full reauthentication, but removing one requires reauthenticating only with the method that is being removed (but not with a password). When multiple methods are supported, we'll want to allow removing one method by authenticating with another -- this change will enable that.
T402037: Increase ReauthenticateTime to 1 hour should be done first, otherwise the user experience would be very annoying.