[Bug Report] radio无法分组

### Mint UI version
2.2.13

### OS/Browsers version
chrome

### Vue version
2.6.10

### Reproduction Link
[https://jsfiddle.net/bp3k96rh/3/](https://jsfiddle.net/bp3k96rh/3/)

### Steps to reproduce
无法分组

### What is Expected?
传值name可以分组

### What is actually happening?
不可以分组 多个地方用到值一样会出现重复渲染

Start with the linked JSFiddle reproduction using Mint UI 2.2.13, Chrome, and Vue 2.6.10, then inspect the radio component behavior. Confirm how the name value is handled when multiple radio groups share values; done means name-based groups work without duplicate rendering.

Written by the indexing model from the issue text.