Error message when adding a node to the shard cluster: "{"error":{"code":26,"codeName":"NamespaceNotFound","errmsg":"Unable to retrieve storageStats in $collStats stage :: caused by :: Collection [local.oplog.rs] not found."},"$db":"local"}}}"

Remove unnecessary balancer configuration refresh that may crash the process during addShard

[v6.0] Ensure update fails on primary when doc_diff::computeDiff() produces empty sub-diffs