Button组件自动添加Icon

# 复现手段

1. 访问 https://lowcode-engine.cn/demo/basic-antd.html
2. 导入
``` Schema
{
"componentName": "Page",
"id": "node_ocl9cfd2b31",
"props": {},
"fileName": "index.jsx",
"hidden": false,
"title": "",
"isLocked": false,
"condition": true,
"conditionGroup": "",
"children": [
{
"componentName": "Page",
"id": "1135:8130",
"props": {},
"title": "ppDiv",
"hidden": false,
"isLocked": false,
"condition": true,
"conditionGroup": "",
"children": [
{
"componentName": "Button",
"id": "1135:8131",
"props": {
"htmlType": "button",
"children": "添加商品",
"type": "primary",
"size": "middle",
"shape": "default",
"block": false,
"danger": false,
"ghost": false,
"disabled": false
},
"hidden": false,
"title": "",
"isLocked": false,
"condition": true,
"conditionGroup": ""
}
]
}
]
}
```
3. 鼠标点击出现的图标