Investigate whether 'dotnet watch' works with sandboxed macOS apps

[rolfbjarne]

Once #25738 is merged (which fixes dotnet watch with sandboxed Mac Catalyst apps), we should investigate whether sandboxed macOS apps also work correctly with dotnet watch.

It's possible the same underlying issue affects macOS apps as well, and may need a similar fix.

Steps

1. Wait for Fix 'dotnet watch' with sandboxed Mac Catalyst apps #25738 to be merged.
2. Test dotnet watch with a sandboxed macOS app.
3. If it doesn't work, apply a similar fix as Fix 'dotnet watch' with sandboxed Mac Catalyst apps #25738.