Fixing Steam's "Download failed: http error 0" on Asahi Linux

Thanks to the amazing work of the Asahi Team, Steam is running on my arm64 Linux on my Apple M2. Unfortunately, it seems that a recent update broke the ability for Steam to speak to the internet, with logs looking this like: [2026-03-17 23:11:20] Set status message: Checking for available updates... [ 0%] Checking for available updates... [2026-03-17 23:11:20] Set percent complete: -1 [2026-03-17 23:11:20] Manifest download: waiting for download to finish [2026-03-17 23:11:20] Manifest downl...