Add double scrollTo to fix scroll restoration inconsistency

Author: carson-katri

Sources/LiveViewNative/Views/Layout Containers/Collection Containers/List.swift

@@ -208,6 +208,7 @@ struct List<Root: RootRegistry>: View {
                         }
                 }
             }
+            .opacity(didAttemptRestoration ? 1 : 0) // prevent flickering when restoring
             .task {
                 defer { didAttemptRestoration = true }
 
@@ -216,6 +217,12 @@ struct List<Root: RootRegistry>: View {
                 else { return }
 
                 scrollProxy.scrollTo(restoreID, anchor: .top)
+                
+                // wait for the next runloop and try to scroll again
+                // it seems that the scroll won't work if the elements are not laid-out yet
+                try! await Task.sleep(for: .nanoseconds(0))
+                
+                scrollProxy.scrollTo(restoreID, anchor: .top)
             }
         }
     }