MediaPlayerSynchronizer groupaction events now emit ignored actions during suspension, with ignored reason

[huntj88]

MediaPlayerSynchronizer groupaction events now emit ignored actions during suspension, with ignored reason.

Feature request #749

Test scenario and emitted events.

added console logs of group actions to sample 21.react-media-template

synchronizerRef.current.on(
    MediaPlayerSynchronizerEvents.groupaction,
    (event: ExtendedMediaSessionActionDetails) => {
        console.log("groupaction", event);
    }
);

1. User in control clicks play

   {
   "type": "groupaction",
   "details": {
       "action": "play",
       "source": "user",
       "clientId": "2c9f76b0-805e-4e92-8063-20bea9901177",
       "local": false,
       "seekTime": 1.914871
   }
   }

2. User not in control starts a suspension by seeking. No event emitted on groupAction.

3. User in control clicks pause, but is ignored by local client with reason localusersuspended. This still affected the group state so the event gets emitted with groupaction

   {
   "type": "groupaction",
   "details": {
       "action": "pause",
       "source": "user",
       "clientId": "2c9f76b0-805e-4e92-8063-20bea9901177",
       "local": false,
       "seekTime": 8.408734,
       "ignoreReason": "localusersuspended"
   }
   }

4. User not in control ends suspension which triggers a catchup event.

   {
   "type": "groupaction",
   "details": {
       "action": "catchup",
       "source": "system",
       "clientId": "66a1e2cd-a122-43df-9937-f8d481c7a317",
       "local": true,
       "seekTime": 9.72914
   }
   }

---

Also removed property blocked on ExtendedMediaSessionActionDetails