[#98921] socket_factory: Fix remaining old call to live cleanup

Signed-off-by: Jan Bylicki <jbylicki@antmicro.com>

Author: jbylicki

server/socket_factory.py

@@ -44,7 +44,7 @@ async def disconnect(sid):
         Handles client disconnection.
         """
         if trace_backend.bt2_thread is not None:
-            await trace_backend.live_trace_cleanup()
+            await trace_backend._live_trace_cleanup()
         logger.info(f"Client {sid} disconnected.")
 
     @sio.on("rpc_request")