feat: fetch sidecar Auspice JSON if .root_sequence is not on the tree
#1685
| Job | Run time |
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| 1m 3s | |
| 4m 26s | |
| 2m 18s | |
| 2m 0s | |
| 4m 45s | |
| 3m 59s | |
| 4m 56s | |
| 4m 2s | |
| 5m 8s | |
| 4m 30s | |
| 1m 6s | |
| 9s | |
| 1m 42s | |
| 0s | |
| 0s | |
| 40m 4s |