Pure ComfyUI Node Registry nodes missing 'update-state' field — update button never appears - UPDATE: The code fix I tried worked. :)

I have published 2 nodes only through the ComfyUI Registry (not in custom-node-list.json). They install fine but after I updated the registry they never show an update button in the Manager UI, even when a newer version is available on the registry. If I click on "Switch ver" I can select it, but no user is going to find that.

To reproduce:
1. Publish a node only through the registry (no PR to custom-node-list.json)
2. Install it through Manager
3. Publish a new version to the registry
4. Restart ComfyUI — no update button appears
5. Hit /customnode/getlist?mode=cache&channel=default — the node has updatable: true but no update-state field

I *think* that it's because 'update-state' is never updated for CNR nodes. It only updates for custom-node-list nodes. Around line ~3215 where the CNR node is updates 'updatable' bit not 'update-state'

```
if(nodeItem['update-state'] == "true") {
nodeItem.action = 'updatable';
}
```
That last part is a guess but it's different from the part that updates custom-node-list nodes so I took a shot.

Using ComfyUI-Manager 3.0.1

Start with the ComfyUI-Manager CNR update handling around line ~3215 and reproduce the behavior using /customnode/getlist?mode=cache&channel=default. Compare how CNR nodes set updatable with how custom-node-list nodes set update-state, then verify that an available registry update produces an update button in the Manager UI.

Written by the indexing model from the issue text.