Add lengthComputable: false event to progress unit tests
#2331
| Job | Run time |
|---|---|
| 2m 3s | |
| 47s | |
| 47s | |
| 36s | |
| 1m 3s | |
| 36s | |
| 1m 27s | |
| 1m 46s | |
| 1m 33s | |
| 58s | |
| 56s | |
| 56s | |
| 1m 34s | |
| 15m 2s |