refactor: Rename WsConnectionUnsure for clarity

client/src/lumina_client.gleam

···
 fn let_definitely_disconnect(model: Model) {
   use dispatch <- effect.from
   case model.ws, model.has_been_running_for_150ms {
-    model_type.WsConnectionDisconnecting, False
+    model_type.WsConnectionUnsure, False
     | model_type.WsConnectionDisconnected, _
     | model_type.WsConnectionInitial, _
     | model_type.WsConnectionRetrying, _
     | model_type.WsConnectionConnected(..), _
     -> Nil
-    model_type.WsConnectionDisconnecting, True ->
-      dispatch(WsDisconnectDefinitive)
+    model_type.WsConnectionUnsure, True -> dispatch(WsDisconnectDefinitive)
   }
 }
 
···
           effect.none(),
         )
         _ -> {
-          let new_model =
-            Model(..model, ws: model_type.WsConnectionDisconnecting)
+          let new_model = Model(..model, ws: model_type.WsConnectionUnsure)
           #(new_model, let_definitely_disconnect(new_model))
         }
       }

client/src/lumina_client/model_type.gleam

···
   WsConnectionDisconnected
   /// A non-connected socket, may also occur while connecting.
   /// This'll either turn into a `WsConnectionConnected` or an `WsConnectionDisconnected`.
-  WsConnectionDisconnecting
+  WsConnectionUnsure
   /// Retrying to connect.
   WsConnectionRetrying
 }

client/src/lumina_client/view.gleam

···
             ],
           )
 
-        model_type.WsConnectionConnected(..)
-        | model_type.WsConnectionDisconnecting -> element.none()
+        model_type.WsConnectionConnected(..) | model_type.WsConnectionUnsure ->
+          element.none()
       },
       case model.page {
         Landing -> view_landing()