message: Removed the redundant check in didMoveToWindow.
diff: - (void)didMoveToWindow {
  [super didMoveToWindow];
  - UIViewController *reactViewController = self.reactViewController;
  - if (reactViewController && self.window) {
  - reactViewController.navigationItem.titleView = self;
  - }
  + self.reactViewController.navigationItem.titleView = self;
  }
  - (void)willMoveToSuperview:(UIView *)newSuperview {
  