fix: 修复swiper在item数量太少时无法循环的问题

[ZEJIA-LIU]

这个 PR 做了什么? (简要描述所做更改)
修复swiper在item数量太少时无法循环的问题

这个 PR 是什么类型? (至少选择一个)

• 错误修复(Bugfix) issue: fix #
• 新功能(Feature)
• 代码重构(Refactor)
• TypeScript 类型定义修改(Typings)
• 文档修改(Docs)
• 代码风格更新(Code style update)
• 其他，请描述(Other, please describe):

这个 PR 涉及以下平台:

• 所有小程序
• 微信小程序
• 支付宝小程序
• 百度小程序
• 字节跳动小程序
• QQ 轻应用
• 京东小程序
• 快应用平台（QuickApp）
• Web 平台（H5）
• 移动端（React-Native）
• 鸿蒙（harmony）

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 58.50%. Comparing base (acaf859) to head (19b4a2b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/taro-components/src/components/swiper/swiper.tsx	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16737      +/-   ##
==========================================
- Coverage   58.51%   58.50%   -0.01%     
==========================================
  Files         466      466              
  Lines       27110    27107       -3     
  Branches     5912     5917       +5     
==========================================
- Hits        15863    15860       -3     
+ Misses       9867     9744     -123     
- Partials     1380     1503     +123     

Flag	Coverage Δ
taro-cli	73.67% <ø> (ø)
taro-runtime	59.87% <ø> (ø)
taro-web	52.68% <80.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...s/taro-components/src/components/swiper/swiper.tsx	33.77% <80.00%> (-0.88%)	⬇️

... and 19 files with indirect coverage changes