message: Populated custom view from child view
diff: }
  }
  +- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex
  +{
  + [super insertReactSubview:subview atIndex:atIndex];
  + [self.button setCustomView:subview];
  +}
  +
  +- (void)removeReactSubview:(UIView *)subview
  +{
  + [super removeReactSubview:subview];
  + if (self.button.customView == subview)
  + [self.button setCustomView:nil];
  +}
  +
  +- (void)didUpdateReactSubviews
  +{
  +}
  +
  - (void)didSetProps:(NSArray<NSString *> *)changedProps
  {
  if ([changedProps containsObject:@"fontFamily"] || [changedProps containsObject:@"fontWeight"]
  