PSA: If your controller rumble isn't working in Silksong, then try forcing Proton in the game's properties on Steam

I verified that my controller's rumble worked fine, yet I had no controller rumble in Silksong. I fixed it by forcing Proton 9.0-4 in Silksong's settings:

1. Navigate to: Steam Library>Silksong>right-click>Properties>Compatibility
2. Check "Force the use of a specific Steam Play compatibility tool"
3. Select "Proton 9.0-4" from the dropdown.

It seems that Silksong has inherited the same controller rumble issue as Hollow Knight with the native build ^[1].