gh-143309: fix UAF in os.execve when the environment is concurrently mutated
#228871
| Job | Run time |
|---|---|
| 3s | |
| 3s | |
| 6s |
os.execve when the environment is concurrently mutated
#228871
| Job | Run time |
|---|---|
| 3s | |
| 3s | |
| 6s |