🐛 [Bug]: Calendar 组件使用horizontal属性，水平滑动时，一些属性失效，比如：scrollToDate

[alexwjj]

Which React Vant packages are impacted?

• [X] react-vant (React Vant core)
• [ ] react-vant-icons(React Vant Icon)

What version of React Vant are you using?

3.3.5

Reproduce live demo(codesandebox or stackblitz)?

No response

Descripition

Calendar 组件使用horizontal属性，水平滑动时，默认显示最小日期，不是当前月。看了下源码，当设置horizontal采用Swiper包裹，但是并没有处理默认Swiper.Item的逻辑