Layer invalidation does not work properly

[flomonster]

What happened?

A series of specific actions can lead to a wrong state of cache in redis.

What did you expect to happen?

Redis cache should always be up to date.

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

1. Go to editor
2. Selec a track section with a buffer stop on it
3. Delete the track section
4. The buffer stop is still visible at some level of zoom

What operating system, browser and environment are you using?

• Browser: Firefox v109
• OS: Nixos v22.11
• Env: Local

OSRD version (top right corner Account button > Informations)

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