message: Scope editor reset when reply changed for thread view
diff: @@ -165,7 +165,7 @@ export default class SendMessageComposer extends React.Component<IProps> {
  }
  public componentDidUpdate(prevProps: IProps): void {
  - const replyToEventChanged = this.props.replyToEvent !== prevProps.replyToEvent;
  + const replyToEventChanged = this.props.replyInThread && (this.props.replyToEvent !== prevProps.replyToEvent);
  if (replyToEventChanged) {
  this.model.reset([]);
  }
  