The controller handed to a Cron Trigger's scheduled handler.
A real Cloudflare ScheduledController satisfies this structurally.
readonly
cron: string
The cron expression that fired, exactly as written in wrangler.toml.
This is the only key a dispatcher can match on: the platform reports which of the Worker's configured triggers fired, not a name of our choosing.
readonly
scheduledTime: number
When the trigger was scheduled to fire, in epoch milliseconds.