Asyncio non-thread safe when debug is on

[AymenFJA]

This only shows when asyncflow even-loop is in debug mode, as a warning/error of something not best-practice.

Traceback (most recent call last):
  File "/home/aymen/ve/asyncflow-dragon/lib/python3.12/site-packages/radical/asyncflow/backends/execution/dragon.py", line 2892, in _wait_for_batch
    self._callback(task_desc, 'DONE')
  File "/home/aymen/ve/asyncflow-dragon/lib/python3.12/site-packages/radical/asyncflow/workflow_manager.py", line 1264, in task_callbacks
    self.handle_task_success(task_dct, task_fut)
  File "/home/aymen/ve/asyncflow-dragon/lib/python3.12/site-packages/radical/asyncflow/workflow_manager.py", line 1119, in handle_task_success
    task_fut.set_result(task["stdout"])
  File "/usr/lib/python3.12/asyncio/base_events.py", line 797, in call_soon
    self._check_thread()
  File "/usr/lib/python3.12/asyncio/base_events.py", line 834, in _check_thread
    raise RuntimeError(
RuntimeError: Non-thread-safe operation invoked on an event loop other than the current one