Reproduction steps:
1. Open the “Bug Test“ project
2. Open the “testscene“ scene
3. Enter Play Mode

Expected result: the Editor does not crash
Actual result: the Editor crashes

Reproduced in: 2021.3.19f1, 2022.2.7f1, 2023.1.0b5, 2023.2.0a3
Could not test in: 2020.3.45f1 ('TerrainData' does not contain a definition for 'ComputeDetailInstanceTransforms')

Reproduced using: macOS 13.0.1 (Intel), Windows 10 (by the reporter), Windows 11

Notes:
1. Sometimes it does not crash for some reason. Deleting Library seems to help to reproduce in such cases
2. Also reproduced in Player

First few crash stack frames:
0x00007ff7775031c7 (Unity) TerrainDataScriptingInterface::ComputeDetailInstanceTransforms
0x00007ff776207f26 (Unity) TerrainData_CUSTOM_ComputeDetailInstanceTransforms
0x000001f4b75872be (Mono JIT Code) (wrapper managed-to-native) UnityEngine.TerrainData:ComputeDetailInstanceTransforms (UnityEngine.TerrainData,int,int,int,single,UnityEngine.Bounds&)
0x000001f4b7586ed3 (Mono JIT Code) [NewBehaviourScript.cs:11] NewBehaviourScript:Update ()