[Bug Report] XInput right-full 将XInput 撑高

### VUX version
2.9.2

### OS/Browsers version
mac os/Chrome

### Vue version
2.5.16

### Code

```html
.weui-cell {
padding: 10px 15px;
position: relative;
display: -ms-flexbox;
display: flex;
-ms-flex-align: center;
align-items: center;
}
.weui-cell_warn {
color: #e64340;
}
.vux-x-input-has-right-full {
padding-top: 0;
padding-right: 0;
padding-bottom: 0;
}
```

### Steps to reproduce
打开含有验证码的XInput页面

### What is Expected?
高度应该是44px

### What is actually happening?
weui-cell padding 屏蔽了vux-x-input-has-right-full的样式 应该加!important