`pages_count` is 0 for generated JSON log when viewing "ALL"

[okt-limonikas]

Looking at https://ts-factory.io/bublik/v2/log/588102?mode=treeAndlog&experimental=true&focusId=588960
We get https://ts-factory.io/logs/dpdk-ethdev-ts/2024/01/31/virtio_virtio:tuor-cbs-speed-stack-00:13:37/json/node_id858.json

"pagination": {
    "cur_page": 1,
    "pages_count": 4
},

Looking at https://ts-factory.io/bublik/v2/log/588102?mode=treeAndlog&experimental=true&focusId=588960&page=0
We get https://ts-factory.io/logs/dpdk-ethdev-ts/2024/01/31/virtio_virtio:tuor-cbs-speed-stack-00:13:37/json/node_id858_all.json

"pagination": {
        "cur_page": 0,
        "pages_count": 0
      },

We've decided that cur_page: 0 means "show all pages"
But pages_count should not be 0 in this case since it's needed for displaying pagination. It's used to determine how many pages log has