gh-149816: Fix a race condition in _PyBytes_FromList with free-threading
#258321
| Job | Run time |
|---|---|
| 7s | |
| 5s | |
| 12s |
_PyBytes_FromList with free-threading
#258321
| Job | Run time |
|---|---|
| 7s | |
| 5s | |
| 12s |