Shadowmask Mode property affects shadow rendering when using Baked Indirect

Steps to reproduce:

1. Download and open attached project ([Internal link])
2. Open OutdoorsScene
3. Select Sun GameObject
4. Under Shadows header, set its Shadowmask Mode to Shadowmask
5. Open Lighting window (Window > Rendering > Lighting)
6. Set Lighting Mode to Baked Indirect
7. Click on Generate Lighting

Expected result:

• Sphere still casts a realtime shadow on the plane, regardless of the Shadowmask Mode chosen when using Baked Indirect

Actual result:

• Sphere no longer casts a realtime shadow after baking lighting (see attached screenshots)

Notes:

• Reproduces in 2021.3.10f1, 2022.2.2f1, 2023.1.0b2
• Reproduces with all mixed light types
• Mixed light behavior in Baked Indirect should be identical to that when Shadowmask Mode is set to Distance Shadowmask