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Android WebViewClient's ShouldInterceptRequest is never called in MAUI WebView

See original GitHub issue

Description

Android WebViewClient’s ShouldInterceptRequest is never called in MAUI WebView

Steps to Reproduce

1.create a maui demo; 2.copy the following code to MauiProgram.cs:

public static class MauiProgram
{
	public static MauiApp CreateMauiApp()
	{
		var builder = MauiApp.CreateBuilder();
		builder
			.UseMauiApp<App>()
			.ConfigureFonts(fonts =>
			{
				fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
				fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
			})
			.ConfigureMauiHandlers(handlers =>
			{
				handlers.AddHandler<Microsoft.Maui.Controls.WebView, ProblemHandler2>();
			});

		return builder.Build();
	}
}

internal class ProblemHandler1 : WebViewHandler
{

	protected override Android.Webkit.WebView CreatePlatformView()
	{
		var wv = base.CreatePlatformView();
		wv.SetWebViewClient(new CustomWebClient());

		return wv;
	}

}

internal class ProblemHandler2 : WebViewHandler
{

    protected override Android.Webkit.WebView CreatePlatformView()
    {
        var wv = new Android.Webkit.WebView(Android.App.Application.Context);
        wv.SetWebViewClient(new CustomWebClient());

        return wv;
    }

}

internal class CustomWebClient : WebViewClient
{

    public override WebResourceResponse ShouldInterceptRequest(Android.Webkit.WebView view, IWebResourceRequest request)
    {
        Debugger.Break();
        Debug.WriteLine(request.Url.ToString());

        return base.ShouldInterceptRequest(view, request);
    }

}

MainPage.xaml.cs

public partial class MainPage : ContentPage
{
	int count = 0;

	public MainPage()
	{
		InitializeComponent();

        WebViewHandler.Mapper.AppendToMapping("MyHandler", (handler, view) =>
        {
#if ANDROID
			var xWv = handler.PlatformView;

			// For ProblemHandler2, this is needed to actually navigate:
			xWv.LoadUrl("https://www.google.com/");
#endif
        });

        this.wv.Source = "https://www.google.com/";
	}

}

3.build and deploy this demo to android device. (I only tested on android 13 emulator )