Steps to reproduce:

1. Download and open repro project (case_1361180-AltRepro)
2. Open SampleSceneA
3. In the Lighting window, set Lighting Mode to Baked Indirect
4. Select one of the Spotlights in the scene
5. In the Inspector window, navigate to the Light component > Shadows
6. Notice that Shadowmask Mode enum is exposed even though Lighting Mode in the Lighting window is set to Baked Indirect

Notes:

- Reproduces in HDRP only
- Reproduces in 2020.3.16f1, 2020.3.17f1, 2021.1.20f1, 2021.2.0b7, 2022.1.0a7
- Exposing this enum causes lighting discrepancies when using Baked Indirect Lighting Mode. It should only be exposed when Shadowmask Lighting Mode is used. Otherwise, it should remain inactive