react warning when adding at least 2 vias with the map module

[SharglutDev]

What happened?

When adding at least 2 vias on a path by clicking on the map, we get a "Encountered two children with the same key" warning in the console.

The created via seem to have the properties id "null" and position "undefined".

What did you expect to happen?

There should'nt be a warning.

How can we reproduce it (as minimally and precisely as possible)?

1. Go to a scenario
2. Click on a add a train
3. Add a rolling stock
4. Add a path
5. Add at least 2 vias with the map module
6. Look at the browser console

What operating system, browser and environment are you using?

• Browser: Firefox v117
• OS: Ubuntu
• Env: local

OSRD version (top right corner Account button > Informations)

a1d74bd