fix: Tree组件中，treeNode配置scopedSlots: {title: 'customeTitle' }，无法获取title插槽的s…

[cubemoon]

…lot-scope值

需要定制tree的title时，具体的值在treeNode的数据上，但现在无法获取title处的插槽参数。经过查看ant-design-vue源码，发现TreeNode.jsx文件在title处配置错误，希望能尽快修复

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[tangjinzhou]

没发现有什么问题啊 也没能复现你说的问题，可以提供一个复现示例吗

[cubemoon]

https://codesandbox.io/s/relaxed-lamarr-9vlwo

[tangjinzhou]

改动不全 你还要需要改这里
https://github.com/vueComponent/ant-design-vue/blob/master/components/tree/Tree.jsx#L170

我先合并这部分了

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