gh-142734: fix UAF in OrderedDict.copy with concurrent mutations by __getitem__
#178360
| Job | Run time |
|---|---|
| 12s | |
| 24s | |
| 4m 48s | |
| 3m 17s | |
| 12m 15s | |
| 8m 40s | |
| 3m 14s | |
| 19m 53s | |
| 20m 39s | |
| 4m 8s | |
| 3m 8s | |
| 3m 9s | |
| 2m 54s | |
| 3m 0s | |
| 3m 14s | |
| 3m 9s | |
| 4m 39s | |
| 27m 3s | |
| 9m 30s | |
| 8m 54s | |
| 12m 19s | |
| 18m 56s | |
| 16m 35s | |
| 24m 46s | |
| 18m 25s | |
| 18m 49s | |
| 8m 27s | |
| 10m 40s | |
| 16m 23s | |
| 12m 9s | |
| 21m 12s | |
| 14m 2s | |
| 0s | |
| 1m 42s | |
| 1m 55s | |
| 5m 3s | |
| 16m 28s | |
| 0s | |
| 3s | |
| 6h 4m 4s |