fix(archiver): restore pending block height metric under pipelining#22994

alexghr merged 2 commits into

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

palla/archiver-pending-block-height-metricAztecProtocol/aztec-packages:palla/archiver-pending-block-height-metricCopy head branch name to clipboard