fix: 修复表单项公式默认值优先级高于实际返回值的问题

[2betop]

What

问题 schema

{
  "type": "page",
  "title": "表单页面",
  "body": [
    {
      "type": "form",
      "mode": "horizontal",
      "initApi": {
        "method": "get",
        "url": "/api/sample/show?id=${id}",
        "mockResponse": {
          "status": 200,
          "data": {
            "id": 1,
            "varc": "123",
            "vard": "124xxx",
            "combo": [
              {
                "vara": "123",
                "varb": "123xxx"
              }
            ],
            "vare": "xxx"
          }
        }
      },
      "body": [
        {
          "label": "Combo",
          "type": "combo",
          "name": "combo",
          "multiple": true,
          "items": [
            {
              "type": "input-text",
              "name": "vara"
            },
            {
              "type": "input-text",
              "name": "varb",
              "value": "${vara}yyy"
            }
          ]
        },
        {
          "type": "input-text",
          "name": "varc",
          "value": "234"
        },
        {
          "type": "input-text",
          "name": "vard",
          "value": "${varc}yyy"
        },
        {
          "type": "input-text",
          "name": "vare",
          "value": "yyyy"
        }
      ]
    }
  ]
}

Why

公式默认值在 form 与在 combo 内部表现不统一，预期初始值高于表达式，除非表达式关联变量发生变化，才更新公式结果

How

[github-actions]

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

Please review the labels and make any necessary changes.