refactor(iOS, Paper): do not add subviews to header config in HostTree

ios/RNSScreenStackHeaderConfig.mm

@@ -456,7 +456,7 @@ + (UINavigationBarAppearance *)buildAppearance:(UIViewController *)vc
     UIImage *shadowImage = appearance.shadowImage;
     // transparent background color
     [appearance configureWithTransparentBackground];
-      
+
     if (!config.hideShadow) {
       appearance.shadowColor = shadowColor;
       appearance.shadowImage = shadowImage;
@@ -688,11 +688,13 @@ + (void)updateViewController:(UIViewController *)vc
     UINavigationBarAppearance *scrollEdgeAppearance =
         [[UINavigationBarAppearance alloc] initWithBarAppearance:appearance];
     if (config.largeTitleBackgroundColor != nil) {
-      // Add support for using a fully transparent bar when the backgroundColor is set to transparent. 
+      // Add support for using a fully transparent bar when the backgroundColor is set to transparent.
       if (CGColorGetAlpha(config.largeTitleBackgroundColor.CGColor) == 0.) {
-      // This will also remove the background blur effect in the large title which is otherwise inherited from the standard appearance.
+        // This will also remove the background blur effect in the large title which is otherwise inherited from the
+        // standard appearance.
         [scrollEdgeAppearance configureWithTransparentBackground];
-        // This must be set to nil otherwise a default view will be added to the navigation bar background with an opaque background.
+        // This must be set to nil otherwise a default view will be added to the navigation bar background with an
+        // opaque background.
         scrollEdgeAppearance.backgroundColor = nil;
       } else {
         scrollEdgeAppearance.backgroundColor = config.largeTitleBackgroundColor;
@@ -826,12 +828,6 @@ - (void)removeReactSubview:(RNSScreenStackHeaderSubview *)subview
 }
 RNS_IGNORE_SUPER_CALL_BEGIN
 
-- (void)didUpdateReactSubviews
-{
-  [super didUpdateReactSubviews];
-  [self updateViewControllerIfNeeded];
-}
-
 #ifdef RCT_NEW_ARCH_ENABLED
 #pragma mark - Fabric specific
 
@@ -1046,6 +1042,11 @@ - (void)updateState:(const facebook::react::State::Shared &)state
 #else
 #pragma mark - Paper specific
 
+- (void)didUpdateReactSubviews
+{
+  [self updateViewControllerIfNeeded];
+}
+
 - (void)didSetProps:(NSArray<NSString *> *)changedProps
 {
   [super didSetProps:changedProps];