Clicking a device in the IoT area could show an error because of how the request was handled. This change updates the request method so users can open device details without that disruption.

There was an error message when clicking on a device in IoT model, due to a null value on a `$.ajax`. 
We replaced it by a simple `fetch` request.

This fix updates how WhatsApp message reactions are processed by replacing outdated partner and guest references with a unified personas system. This ensures the WhatsApp integration continues to work correctly with the latest client-side changes and prevents reaction-related errors.

`partners` and `guests` are not handled in the client side anymore. They should be replaced by `personas`.