The tag displayed in native webview does not work in iPadOS 26 Beta

I'm creating an iPad app using Xcode 26 Beta 6. I have the following simple code and web page, but when I tap the file selection button, nothing appears. Do I need to add any additional code?

code

struct SwiftUIWebView: View {
    @State private var webPage = WebPage()
    private let url = URL(string: "https://www.xxxx.com/")!

    var body: some View {
        WebView(webPage)
            .onAppear {
                webPage.load(URLRequest(url: url))
            }
    }
}

web page

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Test</title>

</style>
</head>
<body>
<div id="container">
<input type="file" />
</div>
</body>
</html>


The tag displayed in native webview does not work in iPadOS 26 Beta
 
 
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