Add node weight changes to balance round summaries#122195

DiannaHohensee merged 9 commits intoelastic:mainelastic/elasticsearch:mainfrom

DiannaHohensee:2025/02/06/ES-10341-balancer-summary-data-node-changesDiannaHohensee/elasticsearch:2025/02/06/ES-10341-balancer-summary-data-node-changesCopy head branch name to clipboard