fix(participants-pane): Resize video layout when closing or opening

react/features/video-layout/middleware.web.js

 import { MiddlewareRegistry } from '../base/redux';
 import { TRACK_ADDED, TRACK_REMOVED, TRACK_STOPPED } from '../base/tracks';
 import { SET_FILMSTRIP_VISIBLE } from '../filmstrip';
+import { PARTICIPANTS_PANE_CLOSE, PARTICIPANTS_PANE_OPEN } from '../participants-pane/actionTypes.js';
 
 import './middleware.any';
 
         break;
     }
 
+    case PARTICIPANTS_PANE_CLOSE:
+    case PARTICIPANTS_PANE_OPEN:
     case SET_FILMSTRIP_VISIBLE:
         VideoLayout.resizeVideoArea();
         break;