feat(workflow): add drag-and-drop support for variable list items for start node#22150

crazywoola merged 2 commits intolanggenius:mainlanggenius/dify:mainfrom

Minamiyama:ENH/ui/start-node-var-list-resortableMinamiyama/dify:ENH/ui/start-node-var-list-resortableCopy head branch name to clipboard