Render Pipeline Converter: PPv2 doesn’t appear in the render pipeline converter

PPv2 doesn’t appear in the render pipeline converter unless you have installed a package. It was suggested to show it always, but make it disabled. Also, if a package is installed, currently it needs to restart unity for it to be shown.

Steps to reproduce:

1. Create a new Built-in project
2. Install Post Processing v2 via package manager
3. Install Universal Rendering Pipeline via package manager
4. Open Render Pipeline Converter window (Window > Rendering > Render Pipeline Converter)

Actual results: There's no Post-Processing Stack v2 in the list to convert

Expected results: There's Post-Processing Stack v2 in the list to convert