message: fix: make status bar area not show when it is undefined
  e.g. when user is in call, and there are search results
diff: @@ -1841,6 +1841,17 @@ export default class RoomView extends React.Component<IProps, IState> {
  />;
  }
  + const statusBarAreaClass = classNames("mx_RoomView_statusArea", {
  + "mx_RoomView_statusArea_expanded": isStatusAreaExpanded,
  + });
  +
  + const statusBarArea = statusBar && <div className={statusBarAreaClass}>
  + <div className="mx_RoomView_statusAreaBox">
  + <div className="mx_RoomView_statusAreaBox_line" />
  + {statusBar}
  + </div>
  + </div>
  +
  const roomVersionRecommendation = this.state.upgradeRecommendation;
  const showRoomUpgradeBar = (
  roomVersionRecommendation &&
  @@ -2052,10 +2063,6 @@ export default class RoomView extends React.Component<IProps, IState> {
  />);
  }
  - const statusBarAreaClass = classNames("mx_RoomView_statusArea", {
  - "mx_RoomView_statusArea_expanded": isStatusAreaExpanded,
  - });
  -
  const showRightPanel = this.state.room && this.state.showRightPanel;
  const rightPanel = showRightPanel
  ? <RightPanel room={this.state.room} resizeNotifier={this.props.resizeNotifier} />
  @@ -2104,12 +2111,7 @@ export default class RoomView extends React.Component<IProps, IState> {
  {messagePanel}
  {searchResultsPanel}
  </div>
  - <div className={statusBarAreaClass}>
  - <div className="mx_RoomView_statusAreaBox">
  - <div className="mx_RoomView_statusAreaBox_line" />
  - {statusBar}
  - </div>
  - </div>
  + {statusBarArea}
  {previewBar}
  {messageComposer}
  </div>
  