Navigates to an item from the back-forward list and sets it as the current item.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
The item to navigate to. The
itemmust be one of the items in the web view’s back-forward list.
A new navigation to the requested item, or
nil if it is already the current item or is not part of the web view's back-forward list.