tests: fix blog host factory to use built in use kestrel call and dump composite host.

test/Blog.Tests/EndToEnd/BlogTest.cs

@@ -3,12 +3,12 @@ namespace Blog.Tests.EndToEnd;
 [TestFixture]
 public abstract class BlogTest : PageTest
 {
-  private readonly BlogHostFactory<Program> _factory = new();
+  private static readonly BlogHostFactory<Program> Factory = new();
 
   public override BrowserNewContextOptions ContextOptions()
   {
     var options = base.ContextOptions();
-    options.BaseURL = _factory.ServerAddress;
+    options.BaseURL = Factory.ServerAddress;
     return options;
   }
 
@@ -30,10 +30,10 @@ public abstract class BlogTest : PageTest
     await Context.Tracing.StopAsync(new()
     {
       Path = Path.Combine(
-            TestContext.CurrentContext.WorkDirectory,
-            "playwright-traces",
-            $"{TestContext.CurrentContext.Test.ClassName}.{TestContext.CurrentContext.Test.Name}.zip"
-        )
+        TestContext.CurrentContext.WorkDirectory,
+        "playwright-traces",
+        $"{TestContext.CurrentContext.Test.ClassName}.{TestContext.CurrentContext.Test.Name}.zip"
+      )
     });
   }
 }