elementUI中的tree使用load属性时，如果设置默认选中的是开头两个，就会全部选中

Question

<el-tree
   :props="props"
   node-key="id"
   :default-expanded-keys="['-1']"
   :default-checked-keys="['0', '1']"
   show-checkbox
   lazy
   :load="loadNode"
 />

props: {
  label: 'name',
  children: 'zones',
  isLeaf: val => !val.zones
},


loadNode(node, resolve) {
  if (node.level === 0) {
     return resolve([{ id: "-1", name: "选择人员", zones: [] }]);
  }
  if (node.level > 1) return resolve([]);
    setTimeout(() => {
      const data = ["人员1", "人员2", "人员3", "人员4"];
      resolve(data.map((v, i) => ({ id: i.toString(), name: v })));
    }, 500);
}

页面中的效果如下