gh-137017: Fix Thread.is_alive() to only return False after the underlying OS thread exits
#162458
| Job | Run time |
|---|---|
| 11s | |
| 23s | |
| 6m 24s | |
| 4m 5s | |
| 11m 47s | |
| 7m 46s | |
| 2m 37s | |
| 2m 30s | |
| 2m 39s | |
| 3m 23s | |
| 3m 40s | |
| 2m 38s | |
| 6m 25s | |
| 18m 38s | |
| 17m 22s | |
| 26m 59s | |
| 7m 38s | |
| 11m 9s | |
| 23m 59s | |
| 16m 3s | |
| 11m 40s | |
| 9m 58s | |
| 17m 57s | |
| 16m 59s | |
| 3m 41s | |
| 12m 43s | |
| 4m 53s | |
| 5m 3s | |
| 17m 43s | |
| 1m 49s | |
| 0s | |
| 15m 53s | |
| 0s | |
| 5s | |
| 4h 54m 40s |