Function scheduleIdleCallback

scheduleIdleCallback(
callback: IdleRequestCallback,
options?: IdleRequestOptions,
): IdleCallbackHandle
Safely schedules a callback to be executed when the browser is idle. Falls back to setTimeout if requestIdleCallback is not available.
Parameters
- callback: IdleRequestCallback
  The function to execute during idle time
- Optionaloptions: IdleRequestOptions
  Optional configuration (timeout in ms)
Returns IdleCallbackHandle
A handle that can be passed to cancelScheduledCallback
Example
```
const handle = scheduleIdleCallback(() => {
  console.log('Running during idle time');
});

// Later, if needed:
cancelScheduledCallback(handle);
```