Make the CI fail with rename error.

Author: ilonatommy

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1/Program.Main.cs

@@ -107,6 +107,7 @@ public static void Main(string[] args)
         #endif
         }
 
+        app.UseStatusCodePagesWithReExecute("/not-found", createScopeForStatusCodePages: true);
         #if (HasHttpsProfile)
         app.UseHttpsRedirection();
 

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1/Program.cs

@@ -100,6 +100,7 @@
     app.UseHsts();
 #endif
 }
+app.UseStatusCodePagesWithReExecute("/not-found", createScopeForStatusCodePages: true);
 
 #if (HasHttpsProfile)
 app.UseHttpsRedirection();