⚡ Bolt: Optimize rack count retrieval in GregFacilityModule

[mleem97]

💡 What: Replaced O(N) FindObjectsOfType with O(1) array access via NetworkMap.instance.GetNumberOfDevices().
🎯 Why: FindObjectsOfType is an expensive O(N) operation in Unity, which slows down the game if called frequently.
📊 Impact: O(N) lookup becomes O(1) retrieval when NetworkMap is initialized, providing a significant performance boost for facility metrics without sacrificing correctness during main menu.
🔬 Measurement: Run the test suite and verify GetRackCount() returns accurate numbers. Observe improved frame times or reduced CPU usage in profiler when calling GetRackCount().

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PR created automatically by Jules for task 7774178638570074952 started by @mleem97

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