Fix largeTitle background color on iOS 13 (#6027)

Resolves largeTitle background color from topBar.title.background.color

Co-authored-by: Guy Carmeli <guyca@users.noreply.github.com>

lib/ios/RNNComponentViewController.m

@@ -9,6 +9,7 @@
 	self.extendedLayoutIncludesOpaqueBars = YES;
     if (@available(iOS 13.0, *)) {
         self.navigationItem.standardAppearance = [UINavigationBarAppearance new];
+        self.navigationItem.scrollEdgeAppearance = [UINavigationBarAppearance new];
     }
 	return self;
 }

lib/ios/TopBarAppearancePresenter.m

@@ -34,12 +34,16 @@
 - (void)updateBackgroundAppearance {
     if (self.transparent) {
         [self.getAppearance configureWithTransparentBackground];
+        [self.getScrollEdgeAppearance configureWithTransparentBackground];
     } else if (self.backgroundColor) {
         [self.getAppearance setBackgroundColor:self.backgroundColor];
+        [self.getScrollEdgeAppearance setBackgroundColor:self.backgroundColor];
     } else if (self.translucent) {
         [self.getAppearance configureWithDefaultBackground];
+        [self.getScrollEdgeAppearance configureWithDefaultBackground];
     } else {
         [self.getAppearance configureWithOpaqueBackground];
+        [self.getScrollEdgeAppearance configureWithOpaqueBackground];
     }
 }
 
@@ -74,4 +78,8 @@
     return self.currentNavigationItem.standardAppearance;
 }
 
+- (UINavigationBarAppearance *)getScrollEdgeAppearance {
+    return self.currentNavigationItem.scrollEdgeAppearance;
+}
+
 @end