🐛 [BUG] 词云图渲染出错

[visiky]

🐛 Bug description [Please make everyone to understand it]

💻 Link to minimal reproduction

Please provide a link by forking these links g2plot or GitHub repo. What is minimal reproduction, and why is it required?

fix: https://github.com/ant-design/ant-design-charts/issues/715

📷 Step to reproduce

Different displays of the same data, may be influent by the setting of fontSize

normal	irrnomal

🏞 Expected result

🚑 Any additional [like screenshots]

• G2Plot Version:
• Platform:

[zhangzhonghe]

这个问题在这里有讨论，有人有兴趣的话可以解决下。