don't crash if exceptiongroup has only hidden tb frames #8081
| Job | Run time |
|---|---|
| 20s | |
| 51s | |
| 4m 10s | |
| 1m 53s | |
| 50s | |
| 1m 35s | |
| 4m 10s | |
| 58s | |
| 2m 29s | |
| 4m 12s | |
| 51s | |
| 4m 9s | |
| 2m 14s | |
| 3m 9s | |
| 4m 10s | |
| 2m 31s | |
| 3m 17s | |
| 51s | |
| 3m 18s | |
| 54s | |
| 4m 12s | |
| 2m 3s | |
| 2m 7s | |
| 1m 24s | |
| 2m 26s | |
| 2m 19s | |
| 4m 10s | |
| 3m 14s | |
| 5s | |
| 1h 8m 52s |