Network disconnect: Show sidewalk no indicators

I noticed that, when reviewing the network disconnects, that I think it would be helpful to have an indicator that there is an explicit "no" mapped.

Example:

https://a-b-street.github.io/speedwalk/#16.69/52.768452/13.31836

All the roads that dont have any lines are in fact right, but I have to switch to iD to see this.