[bug] page组件，在body区域无法获取toolbar区域的值

[yanshuanghua]

实现场景：

实现body区域获取toolbar区域的值

存在的问题：

请简单描述你现在遇到的不符合预期的问题...

当前方案：

{
  "type": "page",
  "name": "page_test",
  "toolbar": [
    {
      "type": "select",
      "name": "tree",
      "options": [
        {
          "label": "A",
          "value": "a"
        },
        {
          "label": "B",
          "value": "b"
        }
      ]
    }
  ],
  "body": [
    {
      "type": "tpl",
      "tpl": "toolbar区域的值为：${tree}"
    }
  ]
}

[github-actions]

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[yanshuanghua]

@2betop 大佬，看下这个问题

[2betop]

落下了属性，刚提交 ：（ #9968