Ensure cylc trigger does not fall back to flow=none by default
#8234
| Job | Run time |
|---|---|
| 12m 38s | |
| 12m 39s | |
| 12m 48s | |
| 12m 54s | |
| 11m 45s | |
| 6m 14s | |
| 4m 50s | |
| 7m 53s | |
| 12m 55s | |
| 13m 0s | |
| 1s | |
| 1h 47m 37s |