面包屑导航，有重复名字时出现key非唯一性错误。

[tomgao365]

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

Version

1.6.2

Environment

vue 2.6

Reproduction link

Steps to reproduce

面包屑导航，有重复名字时出现key非唯一性错误。

Duplicate keys detected: 'xx管理'. This may cause an update error.

What is expected?

可以根据路由的 path 或者指定唯一key标识来做唯一性

What is actually happening?

ant-design-vue/components/breadcrumb/Breadcrumb.jsx

Line 78 in 1adb927

<Menu.Item key={child.breadcrumbName || child.path}>

[github-actions]

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