fix(FEC-9080): when seeking back from end screen no play button displ…

…ayed (#8)

Firing `SEEKED` while ad break, as this event exits the player from ended state (see [here](https://github.com/kaltura/playkit-js-ui/blob/9820c3514f9537d3971217a3e68c35480a3b4fb1/src/components/engine-connector/engine-connector.js#L144))
(No risk because the scrubber is hidden in ad UI)

src/ima-dai-event-manager.js

@@ -9,7 +9,7 @@ class ImaDAIEventManager {
   _queue: ImaDAIEventQueue;
   _dispatchEventHandler: Function;
   _eventManager: EventManager;
-  _parallelEvents: Array<string> = [Html5EventType.VOLUME_CHANGE];
+  _parallelEvents: Array<string> = [Html5EventType.VOLUME_CHANGE, Html5EventType.SEEKED];
   _stopEventDispatchingMap: {[event: string]: boolean} = {
     [Html5EventType.ENDED]: false
   };