[Bug Report] TimePicker range mode set name attributes error

### Element UI version
2.15.6

### OS/Browsers version
Windows 10/Chrome 94.0.4606.81

### Vue version
2.6.14

### Reproduction Link
https://codepen.io/zlucy/pen/gOxLoBE

### Steps to reproduce
```

```
为 time picker 添加 name 和 id 属性。
解析后，name 和 id 被拆分。

### What is Expected?
```

### What is actually happening?
```

Start with the reproduction in the linked CodePen and inspect how range mode renders the name and id attributes. Verify the generated DOM against the expected and actual markup; done means name and id remain on the range wrapper rather than being split across the two inputs.

Written by the indexing model from the issue text.