Check that non-cookie website data does not get removed after a period of no user interaction if the website is a standalone web application.

Before deletion: Client-side cookie exists.
Before deletion: HttpOnly cookie exists.
Before deletion: Regular server-side cookie exists.
Before deletion: LocalStorage entry does exist.
Before deletion: IDB entry does exist.

After deletion: HttpOnly cookie exists.
After deletion: Client-side cookie exists.
After deletion: Regular server-side cookie exists.
After deletion: LocalStorage entry does exist.
After deletion: IDB entry does exist.