官网字体图标首次加载不显示

**Describe the bug**
浏览器禁用缓存情况下，首次加载@antv/graphin-icons提供的字体时，图标不显示，缩放或鼠标悬停一下后，图标出现

**To Reproduce**
- 禁用浏览器缓存
- 刷新页面
- 图标显示为空
- 缩放画布或鼠标悬浮到节点上，图表显示出来

开启缓存的情况下，除第一次外，无上述情况
**Expected behavior**
图标正常加载出来

**Desktop (please complete the following information):**
- OS: [Mac OS]
- Browser [chrome]
- Version [chrome 90.0.4430.93]

**Additional context**
字体加载时机的问题，从network里可以看出，字体文件`at.alicdn.com/t/font_1522921_m3irqw8ynx.woff2`请求顺序靠后

临时解决办法为，绘制之前，在页面标签内预先使用一个字体，例
```
`
```
附版本信息

```
"@antv/graphin": "^2.0.6",
"@antv/graphin-icons": "^1.0.0",
```

Reproduce the issue in Chrome with caching disabled, using the @antv/graphin 2.0.6 and @antv/graphin-icons 1.0.0 versions described. Inspect when the graphin font request occurs relative to the initial icon render; done means the icons appear on the first page load without zooming or hovering.

Written by the indexing model from the issue text.