Add a comment to explain why catch queues.QueueEmpty

Author: note35

Lib/test/test_concurrent_futures/test_interpreter_pool.py

@@ -428,6 +428,8 @@ def run(taskid, ready, blocker):
                     except interpreters.QueueEmpty:
                         pass
                     except queues.QueueEmpty:
+                        # GH-142414: reloading the _queues module makes get to raise
+                        # queues.QueueEmpty instead of interpreters.QueueEmpty.
                         pass
                     else:
                         done += 1