Fixes fireworkRocketDuration calculation
#3087
| Job | Run time |
|---|---|
| 34s | |
| 4m 20s | |
| 4m 3s | |
| 4m 7s | |
| 4m 16s | |
| 4m 18s | |
| 4m 18s | |
| 4m 23s | |
| 4m 14s | |
| 3m 54s | |
| 3m 50s | |
| 4m 15s | |
| 13m 11s | |
| 3m 46s | |
| 3m 31s | |
| 3m 44s | |
| 3m 35s | |
| 1h 14m 19s |