Update HttpListenerInterceptor.cs - closing the whole response (#5478)

We have to close the whole response to immediately send it to the browser before we stop HttpListener or the browser will get nothing

Co-authored-by: Dharshan BJ <dharshanb@microsoft.com>
Co-authored-by: Gladwin Johnson <90415114+gladjohn@users.noreply.github.com>
Co-authored-by: Bogdan Gavril <bogavril@microsoft.com>

Author: 4 people

src/client/Microsoft.Identity.Client/Platforms/Features/DefaultOSBrowser/HttpListenerInterceptor.cs

@@ -173,7 +173,7 @@ private void Respond(Func<AuthorizationResponse, MessageAndHttpCode> responsePro
                     throw new NotImplementedException("HttpCode not supported" + messageAndCode.HttpCode);
             }
 
-            context.Response.OutputStream.Close();
+            context.Response.Close();
         }
     }
 }