Crash during LightProbeManager async Tetrahedralization

Steps to reproduce:

1. Clone and open [Internal link]
2. Open Persistent scene
3. Enter Play mode
4. Click on the doorway to the left to exit the room, and load in the new area
5. Observe several asserts in the console

Notes:

• Affects all lightmapping backends
• Has already been fixed by this PR on trunk: https://ono.unity3d.com/unity/unity/pull-request/140095/_/light-transport/light-714

 

In short,

 - [Internal link] suggested they upgrade to 2021.3 in order to get the partial refactor of LightProbesManager (after trying out a custom build). This solved the immediate crash, but then a crash could be reproed with different steps.

 - [Internal link] suggested they upgrade to 2022.2 in order to get the full refactor of LightProbesManager. As 2022.2 is still in beta, a custom build with the full refactor was delivered to Camuflaj. Apparently, they still experience crashes, we are waiting for repro steps and more information.