fix(switch): 移除重复的onchange回调

[irisSong]

…nto feat_v3.x

🤔 这个变动的性质是？

• 新特性提交
• 日常 bug 修复
• 站点、文档改进
• 演示代码改进
• 组件样式/交互改进
• TypeScript 定义更新
• 包体积优化
• 性能优化
• 功能增强
• 国际化改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他改动（是关于什么的改动？）

🔗 相关 Issue

💡 需求背景和解决方案

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• fork仓库代码是否为最新避免文件冲突
• Files changed 没有 package.json lock 等无关文件

Summary by CodeRabbit

• Bug Fixes
  • 修复了切换组件在点击时可能重复触发 onChange 的问题，现在只会异步调用一次 onChange。

[coderabbitai]

Walkthrough

本次变更移除了在 onClick 事件处理器中对 onChange(!value) 的同步调用，现在仅在异步的 try-catch 块中 await 调用 onChange(!value)，确保 onChange 只被异步调用一次，其余控制流程保持不变。

Changes

文件/分组	变更摘要
src/packages/switch/switch.taro.tsx	移除了 onClick 处理器中对 onChange(!value) 的同步调用，仅保留异步 await 调用。

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant SwitchComponent
  participant onChangeHandler

  User->>SwitchComponent: 点击 Switch
  SwitchComponent->>SwitchComponent: 设置 loading 状态
  alt 异步调用 onChange
    SwitchComponent->>onChangeHandler: await onChange(!value)
    onChangeHandler-->>SwitchComponent: 返回（成功或失败）
    SwitchComponent->>SwitchComponent: 更新内部值
  end

Loading

Possibly related PRs

• fix(switch): 简化props使用 #3132: 同样修改了 switch.taro.tsx 中 onClick 事件对 onChange 的调用方式，直接影响同一事件处理逻辑。
• fix(switch): 异步操作中抛错可中断 loading 态 #3143: 上一 PR 已将 onClick 变为异步并为 onChange 添加了错误处理，本次 PR 在其基础上进一步精简调用逻辑。

Suggested reviewers

• xiaoyatong
• oasis-cloud

Poem

兔子点点小开关，
异步流转不慌乱。
同步调用已移除，
只留 await 在心间。
代码清爽如春风，
小兔欢跳乐无边！
🐇✨

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• src/packages/switch/switch.taro.tsx

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.75%. Comparing base (d0eaabc) to head (5439dea).
Report is 1 commits behind head on feat_v3.x.

Additional details and impacted files

@@            Coverage Diff             @@
##           feat_v3.x    #3259   +/-   ##
==========================================
  Coverage      87.75%   87.75%           
==========================================
  Files            290      290           
  Lines          19111    19111           
  Branches        2937     2938    +1     
==========================================
+ Hits           16770    16771    +1     
+ Misses          2336     2335    -1     
  Partials           5        5           

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