"[PathTracer] Failed to add geometry with hash ' '; terrain has no triangles or is fully covered by hole(s)" errors and infinite baking time when generating lighting

Reproduction steps:
1. Open the attached "TrainLab_RERNG.zip" project
2. Open the "Game" scene
3. Open the Lightning window (Window > Rendering > Lighting)
4. Click “Generate Lighting”
5. Observe the Console

Expected result: No errors are thrown and lighting is generated
Actual result: [PathTracer] Failed to add geometry for terrain with hash '567a136e8dca89e0c3b1c8cb77f678bf'; terrain has no triangles or is fully covered by hole(s).” errors are thrown and baking time seems infinite

Reproducible with: 2021.3.34f1, 2022.3.17f1, 2023.2.4f1, 2023.3.0b1

Reproducible on: Windows 11
Not reproducible on: no other environment tested