fix: 修复 cell-click partial 字段错误

[honkinglin]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

💡 需求背景和解决方案

📝 更新日志

• fix(DatePicker): 修复 cell-click 事件 partial 字段错误

• 本条 PR 不需要纳入 Changelog

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• 文档已补充或无须补充
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[honkinglin]

#1439

[github-actions]

[codecov-commenter]

Codecov Report

Merging #1440 (3190eba) into develop (492d477) will increase coverage by 2.64%.
The diff coverage is 90.99%.

@@             Coverage Diff             @@
##           develop    #1440      +/-   ##
===========================================
+ Coverage    57.94%   60.59%   +2.64%     
===========================================
  Files          407      646     +239     
  Lines        15371    16153     +782     
  Branches      2931     2931              
===========================================
+ Hits          8907     9788     +881     
+ Misses        6187     6071     -116     
- Partials       277      294      +17     

Impacted Files	Coverage Δ
src/alert/_example/icon.vue	100.00% <ø> (ø)
src/alert/_usage/index.vue	0.00% <ø> (ø)
src/anchor/_usage/index.vue	0.00% <ø> (ø)
src/avatar/_example/base.vue	100.00% <ø> (ø)
src/avatar/_usage/index.vue	0.00% <ø> (ø)
src/badge/_usage/index.vue	0.00% <ø> (ø)
src/breadcrumb/_example/custom.vue	100.00% <ø> (ø)
src/breadcrumb/_example/dropdown.vue	100.00% <ø> (ø)
src/button/_example/icon.vue	100.00% <ø> (ø)
src/button/_usage/index.vue	0.00% <ø> (ø)
... and 453 more

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