test: disable runfiles test on MacOS due to non-hermetic `rules_python`

`rules_python` expects `install_name_tool` to be available on the system.

This is not the case when MacOS does not have developer tools installed.

`rules_python` attempts to perform the following:

```
/usr/bin/install_name_tool -id @rpath/libpython3.11.dylib lib/libpython3.11.dylib
```

We should do either:

- Upstream support for hermetic `install_name_tool`
- Switch the runfiles test to `rules_go`

The latter is likely the best choice.