Errors are thrown for lists and arrays in build using IL2CPP when data class contains both #if UNITY_EDITOR fields and generic fields

How to reproduce:
1. Open the 'EditorSerializationBug.zip' project
2. Build the project
3. Observe the Player.log

Expected result: No errors are thrown
Actual result: Errors are thrown

Reproducible with: 6000.0.23f1, 6000.0.62f1, 6000.2.12f1, 6000.3.0b10, 6000.4.0a4
Could not test with: 2023.1.0a1 (Unable to install IL2CPP), 6000.5.0a1 (Unable to build due to unfixable console errors)

Reproducible on: macOS 26.0.1 (M1 Max)
Not reproducible on: no other environments tested

Notes:

• Error message - 'A scripted object (probably Test?) has a different serialization layout when loading. (Read 40 bytes but expected 56 bytes) Did you #if UNITY_EDITOR a section of your serialized properties in any of your scripts?'
• Could not reproduce on Mono