Avoid a state machine allocation in EndpointMiddleware (#46271)

If logging is not enabled, we don't have to await the RequestDelegate task

Author: MihaZupan

src/Http/Routing/src/EndpointMiddleware.cs

@@ -50,6 +50,12 @@ public Task Invoke(HttpContext httpContext)
 
             if (endpoint.RequestDelegate is not null)
             {
+                if (!_logger.IsEnabled(LogLevel.Information))
+                {
+                    // Avoid the AwaitRequestTask state machine allocation if logging is disabled.
+                    return endpoint.RequestDelegate(httpContext);
+                }
+
                 Log.ExecutingEndpoint(_logger, endpoint);
 
                 try