(Crash) Worldserver.exe with autobalance

### Current Behaviour

https://gist.github.com/Fireevil/bae71cc8958c6994c6d9bdc8abb9c1dc

### Expected Behaviour

no crash

### Steps to reproduce the problem

.

### Extra Notes

_No response_

### AutoBalance Debug Commands

_No response_

### AC rev. hash/commit

[d2dfa4a438a2](https://github.com/azerothcore/azerothcore-wotlk/commit/d2dfa4a438a2fc3ef109639c50a084ee104ff65a)

last rev autobalance

### Operating system

Windows 10

### Custom changes or Modules

_No response_

Start with the linked crash report and the autobalance state at commit d2dfa4a438a2, using worldserver.exe on Windows 10. The issue provides no usable reproduction steps, so establish the crash scenario before tracing it; done means the reported autobalance case no longer crashes the worldserver.

Written by the indexing model from the issue text.