Address Copilot reviews - Use the same approach TestServerBuilder used.

- Use the same approach TestServerBuilder used: register a simple mock ISitecoreLayoutClient singleton instead of constructing a sampleRequest/sampleResponse.- ExperienceEditorCustomRoutingFixture.cs
- wire layout service to mock HttpClient in RenderingEngine benchmarks

Author: Krishanthaudayakumara

tests/Sitecore.AspNetCore.SDK.RenderingEngine.Benchmarks/RenderingEngineBenchmarks.cs

@@ -7,6 +7,7 @@
 using Microsoft.Extensions.DependencyInjection;
 using Sitecore.AspNetCore.SDK.AutoFixture.Mocks;
 using Sitecore.AspNetCore.SDK.LayoutService.Client.Extensions;
+using Sitecore.AspNetCore.SDK.LayoutService.Client.Interfaces;
 using Sitecore.AspNetCore.SDK.RenderingEngine.Extensions;
 using Sitecore.AspNetCore.SDK.TestData;
 
@@ -32,8 +33,12 @@ public void Setup()
                     builder.ConfigureServices(services =>
                     {
                         services.AddRouting();
-                        services.AddSitecoreLayoutService();
-                        services.AddHttpClient("mock").ConfigurePrimaryHttpMessageHandler(() => _mockClientHandler!);
+
+                        ISitecoreLayoutClientBuilder layoutBuilder = services.AddSitecoreLayoutService();
+                        layoutBuilder
+                            .AddHttpHandler("mock", _ => new HttpClient(_mockClientHandler!) { BaseAddress = new Uri("http://layout.service") })
+                            .AsDefaultHandler();
+
                         services.AddSitecoreRenderingEngine(options =>
                         {
                             options.AddDefaultComponentRenderer();

tests/Sitecore.AspNetCore.SDK.RenderingEngine.Integration.Tests/Fixtures/ExperienceEditor/ExperienceEditorCustomRoutingFixture.cs

@@ -64,27 +64,7 @@ private WebApplicationFactory<TestWebApplicationProgram> BuildExperienceEditorCu
         {
             builder.ConfigureTestServices(services =>
             {
-                ISitecoreLayoutClient layoutClientSub = Substitute.For<ISitecoreLayoutClient>();
-                SitecoreLayoutRequest sampleRequest = [];
-                SitecoreLayoutResponse sampleResponse = new(sampleRequest)
-                {
-                    Content = new SitecoreLayoutResponseContent
-                    {
-                        Sitecore = new SitecoreData
-                        {
-                            Route = new Route
-                            {
-                                DatabaseName = "master"
-                            }
-                        },
-                        ContextRawData = string.Empty
-                    }
-                };
-
-                layoutClientSub.Request(Arg.Any<SitecoreLayoutRequest>())
-                    .Returns(Task.FromResult(sampleResponse));
-
-                services.AddSingleton(layoutClientSub);
+                services.AddSingleton(Substitute.For<ISitecoreLayoutClient>());
                 services.AddRouting();
                 services.AddSitecoreLayoutService();
                 services.AddControllersWithViews();