Describe the bug
When launching most games from a secondary library directory (including Half-Life: Alyx) it gives me this error:
Error loading action manifest into steamvr: File not found (or something like that).
The issue is caused by the path having the "SteamApps" portion to have bad case (it's searching for "steamapps" instead),
eg. SteamVR tries searching /mnt/ExtHDD/steam_library/steamapps/common/SomeGame/actions.json instead of /mnt/ExtHDD/steam_library/SteamApps/common/SomeGame/actions.json.

When I found that, I created a symlink to SteamApps to fix it temporarily.

To Reproduce
Steps to reproduce the behavior:

1. Open SteamVR
2. Launch a VR game installed into a secondary library folder

Expected behavior
Game inputs working, but they don't.

System Information (please complete the following information):

• Distribution: ArchLinux
• SteamVR version: 1.12.5
• Steam client version: Jun 30 2020 (package version 1593492758)
• Opted into Steam client beta?: Yes
• Graphics driver version: Mesa 20.1.2 (LLVM 10.0.0)
• Gist for SteamVR System Information: https://gist.github.com/tesfabpel/8138a059ce5f331ac23d41234ad0efb4

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.

Note: Commenters who are also experiencing this issue are encouraged to include the "System Information" section in their replies.