Scheduling the entire API state change callback caused the scheduled
hide to fire the first time the user attempted to display the account
creation overlay after a logout, because the drawable wasn't present
before that (so its scheduler wasn't running).
It is not theoretically safe to run `Hide()` unscheduled at its present
call site (as the value change callbacks are fired on the background
API thread). This could also be fixed by setting `AlwaysPresent = true`,
but that's a pretty ugly and unperformant change to make in general.