Fix: remove leftover block_on from graphman chain change-shard#6327

dimitrovmaksim merged 1 commit intographprotocol:mastergraphprotocol/graph-node:masterfrom

dimitrovmaksim:fix/remove-blocking-call-from-graphman-change-sharddimitrovmaksim/graph-node:fix/remove-blocking-call-from-graphman-change-shardCopy head branch name to clipboard