Fixes scrollIndicatorInsets not work in old arch (#46944)

Summary:
Fixes #46918 . break change comes from #44820 and #44789 .

## Changelog:

[IOS] [FIXED] - Fixes scrollIndicatorInsets not work in old arch

Pull Request resolved: #46944

Test Plan: scrollIndicatorInsets should work in old arch.

Reviewed By: philIip

Differential Revision: D64173490

Pulled By: cipolleschi

fbshipit-source-id: f7186439146d1b811c02e584fd1d94fcbb5d88a2

packages/react-native/React/Views/ScrollView/RCTScrollView.m

@@ -1055,6 +1055,23 @@ -(type)getter                                           \
 RCT_SET_AND_PRESERVE_OFFSET(setShowsVerticalScrollIndicator, showsVerticalScrollIndicator, BOOL)
 RCT_SET_AND_PRESERVE_OFFSET(setZoomScale, zoomScale, CGFloat);
 
+- (void)setScrollIndicatorInsets:(UIEdgeInsets)value
+{
+  [_scrollView setScrollIndicatorInsets:value];
+}
+
+- (UIEdgeInsets)scrollIndicatorInsets
+{
+  UIEdgeInsets verticalScrollIndicatorInsets = [_scrollView verticalScrollIndicatorInsets];
+  UIEdgeInsets horizontalScrollIndicatorInsets = [_scrollView horizontalScrollIndicatorInsets];
+
+  return UIEdgeInsetsMake(
+      verticalScrollIndicatorInsets.top,
+      horizontalScrollIndicatorInsets.left,
+      verticalScrollIndicatorInsets.bottom,
+      horizontalScrollIndicatorInsets.right);
+}
+
 - (void)setAutomaticallyAdjustsScrollIndicatorInsets:(BOOL)automaticallyAdjusts API_AVAILABLE(ios(13.0))
 {
   // `automaticallyAdjustsScrollIndicatorInsets` is available since iOS 13.

packages/react-native/React/Views/ScrollView/RCTScrollViewManager.m

@@ -83,6 +83,7 @@ - (UIView *)view
 RCT_EXPORT_VIEW_PROPERTY(scrollEventThrottle, NSTimeInterval)
 RCT_EXPORT_VIEW_PROPERTY(zoomScale, CGFloat)
 RCT_EXPORT_VIEW_PROPERTY(contentInset, UIEdgeInsets)
+RCT_EXPORT_VIEW_PROPERTY(scrollIndicatorInsets, UIEdgeInsets)
 RCT_EXPORT_VIEW_PROPERTY(verticalScrollIndicatorInsets, UIEdgeInsets)
 RCT_EXPORT_VIEW_PROPERTY(scrollToOverflowEnabled, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(snapToInterval, int)