chromium: make the new audio sandbox NixOS-compatible

Deal with https://chromium.googlesource.com/chromium/src/+/f2fc90bb74a05cffde6b4363ee575fcca7c45197
which landed https://github.com/chromium/chromium/blob/master/services/audio/audio_sandbox_hook_linux.cc
containing /usr/share and /usr/lib/x86_64-linux-gnu paths.

closes https://github.com/NixOS/nixpkgs/pull/54960