message: Copied over missing code for image prop support
diff: using namespace facebook::react;
  -@interface NVNavigationBarComponentView () <RCTNVNavigationBarViewProtocol>
  +@interface NVNavigationBarComponentView () <RCTNVNavigationBarViewProtocol, RCTImageResponseDelegate>
  @end
  @implementation NVNavigationBarComponentView {
  @@ -31,6 +31,7 @@ using namespace facebook::react;
  if (self = [super initWithFrame:frame]) {
  static const auto defaultProps = std::make_shared<const NVNavigationBarProps>();
  _props = defaultProps;
  + _imageResponseObserverProxy = RCTImageResponseObserverProxy(self);
  }
  return self;
  }
  @@ -156,6 +157,7 @@ API_AVAILABLE(ios(13.0)){
  [appearance setLargeTitleTextAttributes:[self largeTitleAttributes]];
  appearance.backButtonAppearance = [UIBarButtonItemAppearance new];
  appearance.backButtonAppearance.normal.titleTextAttributes = [self backAttributes];
  + [appearance setBackIndicatorImage:_backImage transitionMaskImage:_backImage];
  return appearance;
  }
  @@ -254,6 +256,9 @@ API_AVAILABLE(ios(13.0)){
  return;
  }
  _backImage = image;
  + if (self.backImageDidLoadBlock) {
  + self.backImageDidLoadBlock();
  + }
  }
  }
  