JS SDK 3.5.2 CRUD autoGenerateFilter模式下URL传参不能传递给searchable字段，columnsNum设置不生效

#### 描述问题：

CRUD开启autoGenerateFilter，URL传参给searchable字段，searchable字段无法获取参数值。设置的columnsNum显示3个，默认只显示2个。

#### 截图或视频：


#### 如何复现（请务必完整填写下面内容）：

1. 你是如何使用 amis 的？

2. amis 版本是什么？请先在最新 beta 版本测试问题是否存在
`js sdk 3.5.2`

3. 粘贴有问题的完整 `amis schema` 代码：
```
{
"type": "page",
"body": [
{
"type": "crud",
"api": "https://aisuda.bce.baidu.com//amis/api/mock2/sample",
"syncLocation": false,
"autoGenerateFilter": {
"columnsNum": 3,
"showBtnToolbar": false
},
"columns": [
{
"name": "id",
"label": "ID",
"searchable": {
"type": "input-text",
"name": "id",
"label": "主键",
"placeholder": "输入id"
}
},
{
"name": "engine",
"label": "Rendering engine"
},
{
"name": "browser",
"label": "Browser",
"searchable": {
"type": "select",
"name": "browser",
"label": "浏览器",
"placeholder": "选择浏览器",
"options": [
{
"label": "Internet Explorer ",
"value": "ie"
},
{
"label": "AOL browser",
"value": "aol"
},
{
"label": "Firefox",
"value": "firefox"
}
]
}
},
{
"name": "platform",
"label": "Platform(s)"
},
{
"name": "version",
"label": "Engine version",
"searchable": {
"type": "input-number",
"name": "version",
"label": "版本号",
"placeholder": "输入版本号",
"mode": "horizontal"
}
},
{
"name": "grade",
"label": "CSS grade"
}
]
}
]
}
```

4. 操作步骤
请简单描述一下复现的操作步骤...

Start with the supplied CRUD schema and reproduce the issue using autoGenerateFilter, URL parameters, searchable fields, and columnsNum: 3. Verify that URL values populate the searchable controls and that three filter columns are displayed; completion means both behaviors work in the JS SDK scenario described.

Written by the indexing model from the issue text.