fix: add check for nothing as manifest file in active_project_watcher
#358
| Job | Run time |
|---|---|
| 9m 24s | |
| 26m 49s | |
| 14m 19s | |
| 12m 48s | |
| 30m 9s | |
| 12m 14s | |
| 3m 49s | |
| 19m 36s | |
| 6m 24s | |
| 2h 15m 32s |