6.8.0 广播事件无效

描述问题：

https://aisuda.bce.baidu.com/amis/zh-CN/docs/concepts/event-action#%E8%A7%A6%E5%8F%91%E5%B9%BF%E6%92%AD 广播事件示例在6.8.0中无效，在最新设计器中和在vue中引入6.8.0 sdk无法正常toast提示及赋值。使用6.7.0是正常的。

截图或视频：

可以的话，尽可能提供截图或视频来补充描述你的问题...

如何复现（请务必完整填写下面内容）：

你是如何使用 amis 的？ sdk、npm 或其他... sdk npm
amis 版本是什么？请先在最新 beta 版本测试问题是否存在 amis@6.8.0

粘贴有问题的完整 amis schema 代码：


{
"type": "page",
"body": [
{
  "name": "role",
  "type": "select",
  "label": "广播一下",
  "mode": "row",
  "options": [
    {
      "label": "海贼王的男人",
      "value": "路飞"
    },
    {
      "label": "海上华佗",
      "value": "乔巴"
    },
    {
      "label": "海上食神",
      "value": "山治"
    }
  ],
  "onEvent": {
    "change": {
      "actions": [
        {
          "actionType": "broadcast",
          "args": {
            "eventName": "broadcast_1"
          },
          "data": {
            "myrole": "${role}",
            "age": 18
          }
        }
      ]
    }
  }
},
{
  "type": "form",
  "id": "form_001",
  "title": "表单1（优先级低）",
  "name": "sub-form1",
  "body": [
    {
      "type": "input-text",
      "label": "昵称",
      "name": "myname",
      "disabled": false,
      "mode": "horizontal"
    }
  ],
  "onEvent": {
    "broadcast_1": {
      "actions": [
        {
          "actionType": "reload",
          "componentId": "form_001",
          "data": {
            "myname": "${myrole}"
          }
        },
        {
          "actionType": "toast",
          "args": {
            "msgType": "info",
            "msg": "表单1刷新完成"
          }
        }
      ]
    }
  }
},
{
  "type": "form",
  "name": "form2",
  "id": "form_002",
  "title": "表单2（优先级中）",
  "body": [
    {
      "type": "input-text",
      "label": "角色",
      "name": "myrole",
      "disabled": false,
      "mode": "horizontal"
    },
    {
      "type": "input-text",
      "label": "年龄",
      "name": "age",
      "disabled": false,
      "mode": "horizontal"
    }
  ],
  "onEvent": {
    "broadcast_1": {
      "weight": 2,
      "actions": [
        {
          "actionType": "reload",
          "componentId": "form_002",
          "data": {
            "myrole": "${myrole}",
            "age": "${age}"
          }
        },
        {
          "actionType": "toast",
          "args": {
            "msgType": "info",
            "msg": "表单2刷新完成"
          }
        }
      ]
    }
  }
},
{
  "type": "form",
  "name": "form3",
  "id": "form_003",
  "title": "表单3（优先级高）",
  "body": [
    {
      "type": "input-text",
      "id": "form_003_text_01",
      "label": "职业",
      "name": "job",
      "disabled": false,
      "mode": "horizontal"
    }
  ],
  "api": "https://api/form/form3",
  "onEvent": {
    "broadcast_1": {
      "weight": 3,
      "actions": [
        {
          "actionType": "reload",
          "componentId": "form_003",
          "data": {
            "job": "${myrole}"
          }
        },
        {
          "actionType": "toast",
          "args": {
            "msgType": "info",
            "msg": "表单3刷新完成"
          }
        }
      ]
    }
  }
}
]
}



4. 操作步骤
请简单描述一下复现的操作步骤...

baidu / amis

6.8.0 广播事件无效 #10939

描述问题：

截图或视频：

如何复现（请务必完整填写下面内容）：