added comment

Author: KirillKurdyukov

src/Ydb.Sdk/src/Pool/ChannelPool.cs

@@ -134,6 +134,7 @@ public GrpcChannel CreateChannel(string endpoint)
 
                 return true;
             };
+        // https://github.com/grpc/grpc-dotnet/issues/2312#issuecomment-1790661801
         httpHandler.Properties["__GrpcLoadBalancingDisabled"] = true;
 
         channelOptions.HttpHandler = httpHandler;