pythongh-119819: Update test to skip if _multiprocessing is unavailable. (pythonGH-120067)

(cherry picked from commit 109e108)

Co-authored-by: Vinay Sajip <[email protected]>

Author: vsajip

Lib/test/test_logging.py

@@ -3894,9 +3894,9 @@ def test_config_queue_handler(self):
             msg = str(ctx.exception)
             self.assertEqual(msg, "Unable to configure handler 'ah'")
 
-    @unittest.skipIf(support.is_wasi, "WASI does not have multiprocessing.")
     def test_multiprocessing_queues(self):
         # See gh-119819
+        import_helper.import_module('_multiprocessing')  # will skip test if it's not available
         cd = copy.deepcopy(self.config_queue_handler)
         from multiprocessing import Queue as MQ, Manager as MM
         q1 = MQ()  # this can't be pickled