自环节点被拖拽后 自环边定位异常 #4303

Describe the bug

源自官网demo，修改某条边为自环边。 当拖拽 包含自环边的节点后，自环边定位异常，跑到了很远的地方。

Your Example Website or App

https://dagre-1.stackblitz.io/

Steps to Reproduce the Bug or Issue

1. after graph render, drag the node with self loop edge;
2. you will see the position of self loop edge is strange.

Expected behavior

follow the dragging node

Screenshots or Videos

No response

Platform

• OS: macOS
• Browser: Chrome
• Version: lastest

Additional context

No response