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 | 2s | 9s | 9s | 11s | 2s |
| Eval | 9s | 23s | 23s | 33s | 0s |
| Build | 26s | 12h00m08s | 4h00m04s | 4h00m31s | 1h59m56s |
| Suite | 2s | 12h00m41s | 4h00m29s | 4h00m31s | 1h59m58s |