move managed handler test class to ManagedHandlerTest.cs

Author: Geoff Kizer

src/System.Net.Http/tests/FunctionalTests/IdnaProtocolTests.cs

@@ -136,10 +136,4 @@ public sealed class HttpClientHandler_IdnaProtocolTests : IdnaProtocolTests
         // WinHttp on Win7 does not support IDNA
         protected override bool SupportsIdna => !PlatformDetection.IsWindows7 && !PlatformDetection.IsFullFramework;
     }
-
-    public sealed class ManagedHandler_IdnaProtocolTests : IdnaProtocolTests
-    {
-        protected override bool UseManagedHandler => true;
-        protected override bool SupportsIdna => true;
-    }
 }

src/System.Net.Http/tests/FunctionalTests/ManagedHandlerTest.cs

@@ -104,6 +104,13 @@ public ManagedHandler_DefaultCredentialsTest(ITestOutputHelper output) : base(ou
         protected override bool UseManagedHandler => true;
     }
 
+    public sealed class ManagedHandler_IdnaProtocolTests : IdnaProtocolTests
+    {
+        protected override bool UseManagedHandler => true;
+        protected override bool SupportsIdna => true;
+    }
+
+
     // TODO #23141: Socket's don't support canceling individual operations, so ReadStream on NetworkStream
     // isn't cancelable once the operation has started.  We either need to wrap the operation with one that's
     // "cancelable", meaning that the underlying operation will still be running even though we've returned "canceled",