This fixes the pod with restartable init containers to have a proper
phase after the pod sandbox re-creation.
Currently, the `runtime.PodStatus` cannot retrieve the active container
statuses, which are the container statuses associated with the current
pod sandbox. This adds the `ActiveContainerStatuses` to
`runtime.PodStatus`, allowing it to include the container statuses of
the current pod sandbox, and fixes the kubelet to correctly set the pod
Phase to `Pending` when no active regular containers are present.