feat: webhook事件补充 --story=129476203

[guohelu]

Reviewed, transaction id: 74274

[github-actions]

代码审查总结

本次 PR 新增了 webhook 事件功能，整体实现清晰。发现以下需要关注的问题：

⚠️ 关键问题：

• webhook 广播缺少异常处理，若广播失败可能导致主流程异常中断
• 建议在广播调用处添加 try-except 保护

✨ 建议：

• 考虑将 webhook 广播改为异步执行，避免阻塞主流程
• 统一 webhook 广播的错误处理策略

代码变更符合预期，测试覆盖充分。

[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (master@f2946a9). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
bkflow/apigw/views/operate_task.py	50.00%	2 Missing ⚠️
bkflow/apigw/views/release_template.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #613   +/-   ##
=========================================
  Coverage          ?   81.39%           
=========================================
  Files             ?      239           
  Lines             ?    13575           
  Branches          ?        0           
=========================================
  Hits              ?    11049           
  Misses            ?     2526           
  Partials          ?        0           

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