fix(background): 支持chrome关闭后运行计划任务；

[bmqy]

No description provided.

[bingren-yd]

https://developer.chrome.com/docs/extensions/develop/migrate/to-service-workers#what-changed

在 Chrome Extension V3体系下 background 已经被新的 service work 替代，它不再是按你预期那样工作
Under the Chrome Extension V3 framework, the background has been replaced by the new service worker, and it no longer operates as you might expect.