Before iOS 26.3, the WKWebView method open func loadFileURL(_ URL: URL, allowingReadAccessTo readAccessURL: URL) -> WKNavigation? worked fine when both parameters were passed the same path (e.g., h5path/index.html), allowing access to and loading of other files like CSS and JS within the h5path directory. However, in iOS 26.4 Beta, this results in an error, and the second parameter must point to a parent directory. Is this a bug?