[SPARK-31967][UI] Downgrade to vis.js 4.21.0 to fix Jobs UI loading time regression#28811

gengliangwang wants to merge 2 commits intoapache:branch-3.0apache/spark:branch-3.0from

gengliangwang:downgrade-3.0gengliangwang/spark:downgrade-3.0Copy head branch name to clipboard