[Bug]: Single file mounts sometimes fail with EACCES

[dcantah]

I have done the following

• I have searched the existing issues
• If possible, I've reproduced the issue using the 'main' branch of this project

Steps to reproduce

Virtualization.framework has a bug with opening hardlinks in some cases, which is how our single file mount idea is structured (we create a hardlink to the file they asked to share). Keeping this open so we can revert back to our hardlink approach on some builds when it is fixed.

Current behavior

Sometimes opening a single file mount returns EACCES.

Expected behavior

Opening hardlinks in the guest to work, and not return EACCES.

Environment

- OS: 
- Xcode: 
- Swift:

Relevant log output

N/A

Code of Conduct

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[dcantah]

Fixed via #665