Backward travel time displayed even tho equal to travel time

### What is the input mode? Mouse ### What type of issue is it? Functionality ### What happened? <img width="1073" height="425" alt="Image" src="https://github.com/user-attachments/assets/1245ff0f-fcee-46ff-8de6-72a3dcffa513" /> [networkGraphic.json](https://github.com/user-attachments/files/26815690/networkGraphic.json) In case of non-symmetrical travel times, we should display travel time and backward travel time, but only if they are not strictly equal. In the above example, we still display both, even tho they are equivalent. I suspect it to be caused to the non-stop policy ### What did you expect to happen? Do not display both travel times if they are equal ### How can we reproduce it (as minimally and precisely as possible)? import [networkGraphic.json](https://github.com/user-attachments/files/26815725/networkGraphic.json) ### On which environments the bug occurs? Local ### On which browser the bug occurs? Firefox ### Netzgrafik-Editor version (top left corner `Version x.yy.zz`) 2.10.19