testrunner: only provide TimerResults in executor tests when desired
#21564
| Job | Run time |
|---|---|
| 8s | |
| 42s | |
| 13s | |
| 26s | |
| 1m 19s | |
| 1m 2s | |
| 1m 9s | |
| 1m 2s | |
| 1m 11s | |
| 1m 6s | |
| 1m 21s | |
| 1m 2s | |
| 10m 41s |