Restructure to activeclient so it always has DiscordId object for active token (if active)

app/routers/nodes.py

@@ -151,7 +151,7 @@ async def send_command_to_all_clients(command_name, *args):
 @role_required(UserRoles.USER)
 async def get_nodes():
     """API endpoint to list currently connected client IDs."""
-    return jsonify([current_app.active_clients[client_id].json() for client_id in current_app.active_clients])
+    return jsonify([current_app.active_clients[client_id].to_dict() for client_id in current_app.active_clients])
 
 
 @nodes_bp.route("/online", methods=['GET'])