BUG: amis折叠器的手机效果错误

[wanquantong]

描述问题：

在表单里的“折叠器”，手机效果不正确。（见截图 标示1） 不在表单里的“折叠器”，手机效果正确。（见截图 标示2）

另外，不在表单里的“折叠器”，多行文本底下有边框线，加上折叠器的边框线，就出现了2条边框线。

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？ sdk

2. amis 版本是什么？请先在最新 beta 版本测试问题是否存在 amis v6.6有问题，之前版本也有问题。

3. 粘贴有问题的完整 amis schema 代码：

   {
   "type": "page",
   "title": "Hello world",
   "body": [
   {
     "type": "tpl",
     "tpl": "初始页面",
     "wrapperComponent": "",
     "inline": false,
     "id": "u:6b4d544c2b45"
   },
   {
     "type": "input-month",
     "label": "日期",
     "name": "date",
     "id": "u:60be6cc33828",
     "displayFormat": "YYYY-MM",
     "placeholder": "请选择月份",
     "valueFormat": "X",
     "minDate": "",
     "maxDate": "",
     "value": "${TODAY()}"
   },
   {
     "id": "u:da2573af02a3",
     "type": "form",
     "title": "表单",
     "mode": "inline",
     "dsType": "api",
     "feat": "Insert",
     "body": [
       {
         "type": "input-text",
         "label": "文本",
         "name": "text",
         "id": "u:b2923a6ec96b"
       },
       {
         "type": "input-number",
         "label": "数字",
         "name": "number",
         "keyboard": true,
         "id": "u:e578e4e36339"
       },
       {
         "type": "textarea",
         "label": "多行文本",
         "name": "textarea",
         "id": "u:9f4764af1c67"
       },
       {
         "type": "collapse-group",
         "activeKey": [
           "1"
         ],
         "body": [
           {
             "type": "collapse",
             "key": "1",
             "active": true,
             "header": "标题1",
             "body": [
               {
                 "type": "tpl",
                 "tpl": "这里是内容1",
                 "wrapperComponent": "",
                 "inline": false,
                 "id": "u:ee05a3c01a9b"
               }
             ],
             "id": "u:c982bb36835d"
           },
           {
             "type": "collapse",
             "key": "2",
             "header": "标题2",
             "body": [
               {
                 "type": "tpl",
                 "tpl": "这里是内容1",
                 "wrapperComponent": "",
                 "inline": false,
                 "id": "u:2627bdd6946b"
               }
             ],
             "id": "u:904ef7430f3f"
           }
         ],
         "id": "u:f5ce22048efe"
       }
     ],
     "actions": [
       {
         "type": "button",
         "label": "提交",
         "onEvent": {
           "click": {
             "actions": [
               {
                 "actionType": "submit",
                 "componentId": "u:da2573af02a3"
               }
             ]
           }
         },
         "level": "primary",
         "id": "u:dc53c87ef8bd"
       }
     ],
     "resetAfterSubmit": true,
     "wrapWithPanel": true
   },
   {
     "type": "collapse-group",
     "activeKey": [],
     "body": [
       {
         "type": "collapse",
         "key": "1",
         "active": false,
         "header": "标题1",
         "body": [
           {
             "type": "tpl",
             "tpl": "这里是内容1",
             "wrapperComponent": "",
             "inline": false,
             "id": "u:08e47923071e"
           }
         ],
         "id": "u:5e2d1d0918a3",
         "collapsable": true
       },
       {
         "type": "collapse",
         "key": "2",
         "header": "标题2",
         "body": [
           {
             "type": "tpl",
             "tpl": "这里是内容1",
             "wrapperComponent": "",
             "inline": false,
             "id": "u:153829acc75c"
           },
           {
             "type": "textarea",
             "label": "多行文本",
             "name": "textarea",
             "id": "u:fa48f8a10f34",
             "minRows": 3,
             "maxRows": 20,
             "readOnly": false,
             "static": true,
             "value": "1\n1\n2"
           }
         ],
         "id": "u:8e569e72a511",
         "active": false
       },
       {
         "type": "tpl",
         "tpl": "请编辑内容",
         "inline": true,
         "wrapperComponent": "",
         "id": "u:812a0e9bc3f7"
       }
     ],
     "id": "u:67ae11ecb81f",
     "accordion": false
   }
   ],
   "id": "u:09fbb140b7c7"
   }

4. 操作步骤 手机浏览器查看网页

[github-actions[bot]]

👍 Thanks for this! 🏷 I have applied any labels matching special text in your issue.

Please review the labels and make any necessary changes.