feature: support to print snapshot info for container

[ningmingxiao]

containerd config

  [plugins."io.containerd.snapshotter.v1.overlayfs"]
    upperdir_label = true

nerdctl -n k8s.io container inspect 6fca --mode=native
we can find container's rwlayer dir is /var/lib/containerd/io.containerd.snapshotter.v1.overlayfs/snapshots/439/fs

        "SnapshotInfo": {
            "Kind": "Active",
            "Name": "6fca9b85372791a91e6931a0fc8895aa1f362453cbca9d0ddf7e4c19d257875d",
            "Parent": "sha256:e215fa422c604a8ea57ffcf6abc11e686d50a89f861c9b90adbb76033a956c66",
            "Labels": {
                "containerd.io/snapshot/overlay.upperdir": "/var/lib/containerd/io.containerd.snapshotter.v1.overlayfs/snapshots/439/fs"
            },
            "Created": "2026-08-02T00:43:41.55270773Z",
            "Updated": "2026-08-02T00:43:41.55270773Z"
        }

fix containerd/containerd#10053