By: Greg Pfeil <greg@technomadic.org>
Share one builder between the detection test helpers `all_known_except` and `fully_reported_upgrades_are_compatible` each rebuilt the reported-upgrade vec by iterating `NETWORK_UPGRADES`. Factor the per-branch construction into `reported_upgrade` and the full sweep into `all_known`, and have both call sites use them.
| Time to Start | Worker time | Duration | Time to finish | Idle | |
| Config | 0s | 12s | 12s | 12s | 0s |
| Eval | 11s | 10s | 10s | 22s | 0s |
| Build | 18s | 4h57m26s | 1h40m25s | 1h40m44s | 0s |
| Suite | 0s | 4h57m50s | 1h40m44s | 1h40m44s | 0s |