chore: debug zrh-hydra-builder-darwin-8

[basvandijk]

Don't merge!

This is to test the recently resurrected zh-hydra-builder-darwin-8.dfinity.systems which caused the failure:

/Users/dfinity/actions-runner/_work/ic/ic/.github/actions/bazel/bin/bazel: line 128: bazel: command not found

[basvandijk]

The issue is that on darwin-8 the PATH doesn't contain /usr/local/bin which contains bazel:
BAZEL_ACTION_OLDPATH = /usr/bin:/bin:/usr/sbin:/sbin

while on others like darwin-1 the PATH does contain it:
BAZEL_ACTION_OLDPATH = /Users/dfinity/.nix-profile/bin:/nix/var/nix/profiles/default/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/usr/local/Cellar/openssh/9.8p1/bin