离散节点，一个节点去碰另外的节点，节点会整体往下掉 #4459

Describe the bug

1、选择g6demo这个路由 2、离散节点，一个节点去碰另外的节点，节点会整体往下掉，而且经常复现

Your Example Website or App

https://codesandbox.io/p/github/Tina75/graph-test/master?workspaceId=03db8cd6-1640-4908-a79c-36d13e69e577

Steps to Reproduce the Bug or Issue

1、节点移动碰到第二个节点，两个节点都会往下掉

Expected behavior

我希望两个节点不要往下掉，这样用户看了很费解

Screenshots or Videos

https://user-images.githubusercontent.com/26056312/233891210-81d310a9-9dc1-4f00-b9a4-4c23308c1452.mp4

Platform

• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Version: [e.g. 91.1]

Additional context

No response