fix(sequencer): diagnose why no committee exists instead of a scary log#24760

PhilWindle merged 4 commits into

merge-train/spartanAztecProtocol/aztec-packages:merge-train/spartanfrom

spl/a-1423-show-a-nicer-log-when-committee-is-not-yet-formed-on-a-newAztecProtocol/aztec-packages:spl/a-1423-show-a-nicer-log-when-committee-is-not-yet-formed-on-a-newCopy head branch name to clipboard