How to reproduce:
1. Create a new project with a URP template
2. Open the Console window

Expected result: No errors are seen in the Console window
Actual result: The Console window is filled with errors such as "NotSupportedException: ForwardRendererData has been deprecated. Use UniversalRendererData instead"

Reproducible with: 2021.2.0a9, 2021.2.0a12
Not reproducible with: 2018.4.33f1, 2019.4.24f1, 2020.3.3f1, 2021.1.2f1, 2021.2.0a8

Notes:
- These errors do disappear completely after clearing them, thus they won't be there after opening the same project a second time
- On 2021.2.0a11 they appear when clicking on the folder "Scripts" in the Hierarchy window
- 2021.2.0a9 and 2021.2.0a8 templates are using identical URP package versions: 12.0.0