feat: add package cache update during APT initialization

[Kakueeen]

Added package cache update functionality during APT initialization
process. When backend initialization is not in process, the system now
automatically updates the package cache before proceeding. This ensures
that package information is current and reduces potential installation
errors due to outdated cache. Added new display mode APT_UPDATE_CACHE
to show cache update progress, and implemented transaction handling for
cache updates with proper success/failure logging.

Log: Added automatic package cache update during application startup

Influence:

1. Test application startup when backend initialization is not in
   process
2. Verify that "Updating package cache..." message appears during update
3. Test successful cache update scenario
4. Test cache update failure handling
5. Verify that backend reloads cache after successful update
6. Check that application properly transitions to PROCESS_FIN state
   after update completion

feat: 在APT初始化期间添加软件包缓存更新功能

在APT初始化过程中添加了软件包缓存更新功能。当后端初始化不在进行中时，系
统现在会在继续之前自动更新软件包缓存。这确保了软件包信息是最新的，并减少
了因缓存过时导致的潜在安装错误。添加了新的显示模式APT_UPDATE_CACHE来显示
缓存更新进度，并实现了缓存更新的事务处理，包含适当的成功/失败日志记录。

Log: 在应用程序启动时添加了自动软件包缓存更新功能

Influence:

1. 测试当后端初始化不在进行中时的应用程序启动
2. 验证在更新期间是否显示"更新软件包缓存..."消息
3. 测试成功的缓存更新场景
4. 测试缓存更新失败处理
5. 验证后端在成功更新后是否重新加载缓存
6. 检查应用程序在更新完成后是否正确转换到PROCESS_FIN状态

Task: https://pms.uniontech.com/task-view-386389.html

[sourcery-ai]

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Kakueeen, max-lvs

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