list组件body数组内的node节点无法使用type

#### 实现场景：
list组件内嵌入一个tpl节点，展现链接。

#### 存在的问题：
1.1.7版本支持一下效果。最新版本1.8.0-beat.2不支持。

#### 当前方案：
请粘贴你当前方案的完整 amis schema 代码...

```
{
"type": "page",
"body": [
{
"type": "list",
"source": "${collections}",
"listItem": {
"body": [
{
"type": "hbox",
"columns": [
{
"type": "static-tpl",
"label": "collectionId",
"name": "collectionId",
"tpl": "123"
},
{
"label": "accountId",
"name": "accountId"
},
{
"label": "管理员",
"name": "managerUidList"
}
]
}
]
}
}
],
"data": {
"text": "World!",
"collections": [
{
"collectionId": "123",
"accountId": "123"
}
]
}
}
```

Start with the supplied AMIS schema and inspect the list component's handling of node objects in listItem.body, comparing versions 1.7 and 1.8.0-beta.2. Reproduce the schema and verify that the nested static-tpl node's type is recognized and renders the link as expected.

Written by the indexing model from the issue text.