The tree component replaces the key with: field-names and will report Tree missing follow keys:'undefined'

[cff-github]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.0.0-alpha.4

Environment

3.2.20

Reproduction link

https://codesandbox.io/s/admiring-bush-mcmq7

Steps to reproduce

{{ name }} {{ name }} <script> import { defineComponent, ref, watch } from 'vue'; export default defineComponent({ setup() { const expandedKeys = ref(['0-0-0', '0-0-1']); const selectedKeys = ref(['0-0-0', '0-0-1']); const checkedKeys = ref(['0-0-0', '0-0-1']); const fieldNames = { children: 'child', title: 'name', key:'test' }; const treeData = [{ name: 'parent 1', test: '0-0', child: [{ name: '张晨成', test: '0-0-0', disabled: true, child: [{ name: 'leaf', test: '0-0-0-0', disableCheckbox: true, }, { name: 'leaf', test: '0-0-0-1', }], }, { name: 'parent 1-1', test: '0-0-1', child: [{ test: '0-0-1-0', name: 'zcvc', }], }], }]; watch(expandedKeys, () => { console.log('expandedKeys', expandedKeys); }); watch(selectedKeys, () => { console.log('selectedKeys', selectedKeys); }); watch(checkedKeys, () => { console.log('checkedKeys', checkedKeys); }); return { expandedKeys, selectedKeys, checkedKeys, fieldNames, treeData: ref(treeData), }; },

});
</script>

What is expected?

希望不报错

What is actually happening?

warning.js?2149:6 Warning: Tree missing follow keys: 'undefined'

[github-actions]

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