Steps to reproduce:

1. Create a new URP project, or open an existing one
2. Create a new material
3. Enable the Emission flag
4. Notice that the Global Illumination enum list is missing

Notes:

- This is a regression in functionality when compared to built-in RP. In built-in RP, we offered three options: None, Baked, and Realtime
- In URP, by enabling the Emission flag, emissive materials will always contribute to GI. This is not always needed