walk-around for React-Native bug with multiple RCTRootView (#1618)

https://github.com/wix/react-native-navigation/issues/1446

ios/RCCViewController.m

@@ -269,6 +269,22 @@ const NSInteger TRANSPARENT_NAVBAR_TAG = 78264803;
   return [NSString stringWithFormat:@"%lld", milliseconds];
 }
 
+// This is walk around for React-Native bug.
+// https://github.com/wix/react-native-navigation/issues/1446
+//
+// Buttons in ScrollView after changing route/pushing/showing modal
+// while there is a momentum scroll are not clickable.
+// Back to normal after user start scroll with momentum
+- (void)_traverseAndCall:(UIView*)view
+{
+  if([view isKindOfClass:[UIScrollView class]]) {
+    [[(UIScrollView*)view delegate] scrollViewDidEndDecelerating:(id)view];
+  }
+  
+  [view.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
+    [self _traverseAndCall:obj];
+  }];
+}
 
 - (void)viewDidAppear:(BOOL)animated
 {
@@ -289,6 +305,7 @@ const NSInteger TRANSPARENT_NAVBAR_TAG = 78264803;
 
 - (void)viewDidDisappear:(BOOL)animated
 {
+  [self _traverseAndCall:self.view];
   [super viewDidDisappear:animated];
   [self sendGlobalScreenEvent:@"didDisappear" endTimestampString:[self getTimestampString] shouldReset:YES];
   [self sendScreenChangedEvent:@"didDisappear"];