Dynamic 子表单字段名冲突错误

版本:  3.6.5 到最新都有此问题
问题描述: 当出现嵌套表格时, 如果字段名为 children，会导致子 Dynamic 的数据出现异常
示例: 
回显加载正常: 
![输入图片说明](https://foruda.gitee.com/images/1764061640458280038/89e84f1e_2208600.png "屏幕截图")

加载完成后 submit 或关闭都会导致传递的数据被追加数据:

现在是默认被追加了 imgUrl/children，当父级中不存在imgUrl，子级不会主动追加imgUrl，其他字段正常

![输入图片说明](https://foruda.gitee.com/images/1764061661555154455/8f571157_2208600.png "屏幕截图")

json 数据
```json
"children": [
      {
        "title": "Protein Post-Translational Modification Analysis",
        "describe": "Providing specialized PTM analysis through advanced MS platforms and standardized workflows",
        "btnName": "More11",
        "url": "/protein-post-translational-modifications-profiling-service.html",
        "imgUrl": "https://file.brightmindcrm.com/test/bt-crms-info/20250206/media/1887369072443363328-1-1.svg",
        "children": [
          {
            "title2": "Protein Post-Translational Modification Analysis",
            "describe2": "Providing specialized PTM analysis through advanced MS platforms and standardized workflows",
            "btnName2": "More",
            "url2": "/protein-post-translational-modifications-profiling-service.html",
            "imgUrl2": "https://file.brightmindcrm.com/test/bt-crms-info/20250206/media/1887369072443363328-1-1.svg"
          }
        ]
      }
    ]
```
会被自动增加 imgUrl/children

Dynamic 字段配置
```
{
            label: getColumnName(key),
            prop: key,
            type: "dynamic", // 子列表
            span: 23,
            width: 800,
            labelWidth: getLabelWidth(key),
            children: {
                // addDisplay: true,
                // addBtn: true,    // 显式显示新增按钮
                // delBtn: true,    // 显式显示删除按钮
                // addRowBtn: true, // 有些版本需要这个配置
                // delRowBtn: true, // 有些版本需要这个配置
                // index: true,
                align: 'center',
                headerAlign: 'center',
                column: nextColumnList,
                rowAdd: (done) => {
                    done({});
                },
                rowDel: (row, done) => {
                    done();
                },
            },
            rules: [{
                required: false,
                message: "请编写子列表数据 " + key,
                trigger: "blur"
            }]
        }
```

GVP smallwei/Avue

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GVPsmallwei/Avue

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