Revert sample changes

Author: javiercn

src/Components/Samples/BlazorUnitedApp/Pages/Index.razor

@@ -33,7 +33,7 @@
 
     [SupplyParameterFromForm] Customer? Value { get; set; }
 
-    protected override void OnInitialized() => throw new InvalidOperationException("Some error");
+    protected override void OnInitialized() => Value ??= new();
 
     bool _submitted = false;
     public void Submit() => _submitted = true;

src/Components/Samples/BlazorUnitedApp/Program.cs

@@ -3,13 +3,8 @@
 
 using BlazorUnitedApp;
 using BlazorUnitedApp.Data;
-using Microsoft.AspNetCore.Hosting.StaticWebAssets;
 
 var builder = WebApplication.CreateBuilder(args);
-// Enable this so that we can resolve static web assets in the Production environment
-// without publishing the app.
-// This is so that we can test the error page.
-StaticWebAssetsLoader.UseStaticWebAssets(builder.Environment, builder.Configuration);
 
 // Add services to the container.
 builder.Services.AddRazorComponents();
@@ -21,7 +16,7 @@
 // Configure the HTTP request pipeline.
 if (!app.Environment.IsDevelopment())
 {
-    app.UseExceptionHandler("/Error", newScope: true);
+    app.UseExceptionHandler("/Error");
     // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
     app.UseHsts();
 }