MapIdleCallback

The `map` has entered the idle state. The `map` is idle when there are no ongoing animations, transitions and the `map` has rendered all requested non-volatile tiles (e.g., live traffic tiles). The event will not be emitted if `setUserAnimationInProgress` and / or `setGestureInProgress` is set to `true`. The `MapIdle` will also be emitted after expired resources are re-fetched and `map` re-renders the new data.