Fetch the latest schedule-block transition for a single campaign id,
or null if none has been observed since the store was created /
reset.
Populated whenever the server emits a tick carrying a
scheduleTransition field — i.e. only on schedule-block boundary
crossings, never on steady-state ticks.
Fetch the latest schedule-block transition for a single campaign id, or
nullif none has been observed since the store was created / reset.Populated whenever the server emits a
tickcarrying ascheduleTransitionfield — i.e. only on schedule-block boundary crossings, never on steady-state ticks.