🧪 Add error test for try-finally in AmbientBiotaDirector

[marko1olo]

🎯 What: The AmbientBiotaDirector.CompleteActiveJobForTeardown method's DispatcherJobFence.TryComplete inside a try-finally block was missing an error/exception path test. We needed to ensure that if JobHandle.Complete fails (for instance if executed incorrectly off the main thread), the finally block properly triggers to release the _activeSwapWindowDepth.

📊 Coverage: A new edit-mode test AmbientBiotaDirectorTeardownErrorEditTests.cs uses Task.Run to deliberately execute JobHandle.Complete on a background thread. This effectively triggers an InvalidOperationException natively from Unity which allows us to assert that finally block successfully executed and properly managed DispatcherJobFence.EndPostSimulationSwapWindow and _jobPending resources.

✨ Result: Better confidence when making refactorings touching AmbientBiotaDirector, job queues, or DispatcherJobFence swap window interactions as exception paths are actively monitored.

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PR created automatically by Jules for task 17048931417167177332 started by @marko1olo

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