Yes, you can call the Blynk HTTP API from Node-Red and update properties that way.
The documentation says that isDisabled is supported, but I’m not sure if 'isHidden` is supported in the API…
There’s an example of how to use the API in Node-Red to log an event here (in the “Notifications” section of this post)…
You can use the same approach to set a widget property via the API.