message: Remove the correct widget listener
diff: @@ -70,8 +70,8 @@ export default class FromWidgetPostMessageApi {
  removeListener(action, callbackFn) {
  if (!this.widgetListeners[action]) return;
  - const idx = this.widgetListeners.indexOf(callbackFn);
  - if (idx !== -1) this.widgetListeners.splice(idx, 1);
  + const idx = this.widgetListeners[action].indexOf(callbackFn);
  + if (idx !== -1) this.widgetListeners[action].splice(idx, 1);
  }
  /**
  