fix(ActionSheet): resolved select event parameter error

[anlyyao]

🤔 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

fix #696

💡 需求背景和解决方案

📝 更新日志

• fix(ActionSheet): 修复 items 项数小于 count 时，selected 事件返回值错误

• other(ActionSheet): 补充测试用例

• 本条 PR 不需要纳入 Changelog

☑️ 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
• Changelog 已提供或无须提供

[github-actions]

[github-actions]

Size Change: -11 B (0%)

Total Size: 474 kB

Filename	Size	Change
./dist/tdesign.js	277 kB	+2 B (0%)
./dist/tdesign.min.js	134 kB	-13 B (0%)

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Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	36.2 kB
./dist/tdesign.min.css	26.1 kB

[github-actions]

Size Change: -278 B (0%)

Total Size: 473 kB

Filename	Size	Change
./dist/tdesign.js	277 kB	-152 B (0%)
./dist/tdesign.min.js	133 kB	-126 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	36.2 kB
./dist/tdesign.min.css	26.1 kB

[github-actions]

Size Change: -899 B (0%)

Total Size: 473 kB

Filename	Size	Change
./dist/tdesign.js	277 kB	-488 B (0%)
./dist/tdesign.min.js	133 kB	-411 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	36.2 kB
./dist/tdesign.min.css	26 kB