[libcxx-commits] [libcxx] [libc++][test][msan] Fix bots after #67799 (PR #73152)

[Vitaly Buka via libcxx-commits]

vitalybuka wrote:

Buildbot is:
```
libatomic1:amd64                  13.1.0-2ubuntu2~23.04             amd64        support library providing __atomic built-in functions
```

Workstation:
```
libatomic1:amd64                                     13.2.0-4                                                    amd64        support library providing __atomic built-in functions
```

I copied compiled test binary and libc++ so files from the bot to the workstation and it does not hang.


https://github.com/llvm/llvm-project/pull/73152