[Android 14] Foreground service type

[nbradbury]

In order to update to Android 14, we need to use a foreground service type with foreground-facing services.

Some work on this has already been done to set the foreground type for UploadService and MediaDeleteService, but we need to include SiteCreationService and LoginWpcomService.

Also, on Upside Down Cake and above we need to call ServiceCompat.startService with a foreground service type. From a quick glance at our code, we may only need to be concerned about that for UploadService (if at all).

[dangermattic]

Thanks for reporting! 👍

[nbradbury]

Closed via #21047