fix(swiper): 轮播跳帧

[oasis-cloud]

🤔 这个变动的性质是？

• 日常 bug 修复

🔗 相关 Issue

1.swiper 自动轮播在一轮结束后，第二轮轮播到第二帧出现跳帧

2.使用 countdown 和 swiper，swiper 无法自动轮播，因为组件中的状态变更，会重新渲染，由于 swiper 监听 children 变化，导致状态取消了自动轮播

💡 需求背景和解决方案

针对第二个问题，需要去掉对 children，并调整了相关的 demo，动态加载和异步加载可以借鉴异步加载的方式处理。

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (3c808fa) 76.06% compared to head (3d313b4) 76.21%.

Files	Patch %	Lines
src/packages/swiper/swiper.tsx	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #1886      +/-   ##
==========================================
+ Coverage   76.06%   76.21%   +0.15%     
==========================================
  Files         215      215              
  Lines        8699     8700       +1     
  Branches     2489     2490       +1     
==========================================
+ Hits         6617     6631      +14     
+ Misses       1886     1873      -13     
  Partials      196      196              

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