Pass API Err Msgs to Notifications Widget

[sutt]

The top right notification bar currently only displays "Error" when receiving an err on XHR.

Add the detail.message returned in the HTTP 400+ response json. Or "Error" if no message.

For example on a withdrawal that takes more sats than

{"detail":{"error_code":12005,"message":"Insufficient funds."}}

But the frontend only displays "Error" as seen below.

TODO

• [ ] Refactor interceptors to parse the err response body and display the message on react-query requests.

[aliraza556]

@sutt, Please assign me?