fix: [pluginmanager] can`t switch navigation after switched to plugin…

[LiHua000]

…manager by menu action

Log: as title

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在PluginManagerModule::initialize函数中，创建了QAction对象menuAction，但未看到对应的destroyed信号连接，可能会导致内存泄漏。
• QObject::connect使用了Lambda表达式，但没有捕获任何外部变量，这可能会导致悬垂指针的风险。
• uiController->addAction的第二个参数从actionOptionsImpl变更为new AbstractAction(menuAction)，需要确认AbstractAction类的行为是否正确处理了QAction对象。
• 新增的QAction图标通过QIcon::fromTheme("plugins-navigation")获取，但没有检查图标是否有效。
• 连接menuAction的triggered信号到Lambda表达式时，Lambda表达式捕获了this，这意味着menuAction对象被隐式传递给Lambda，这可能会导致this在上下文中不正确。

是否建议立即修改:
是

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Kakueeen, LiHua000
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