为什么 rect 无法显示icon呢？ #4985

Describe the bug

为什么 rect 无法显示icon呢？

官网的例子也没有显示icon 是需要配置点啥吗 还是不支持

Your Example Website or App

https://g6.antv.antgroup.com/zh/examples/item/defaultNodes/#rect

Steps to Reproduce the Bug or Issue

https://g6.antv.antgroup.com/zh/examples/item/defaultNodes/#rect

Expected behavior

希望能正常显示icon

Screenshots or Videos

No response

Platform

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

Additional context

No response