[ServiceBus] CI Test hotfixes (#14195)

* See if we can identify why the preparer is going sideways with the cosmos changes in CI.

* try using testclassinstance islive as a more proper approach.  if this doesn't work, may try a devtoolsutils import in a try catch as a final hail mairy for is_live() to match the decorator itself.

* Remove debug prints from preparer hotfix

tools/azure-devtools/src/azure_devtools/scenario_tests/preparers.py

@@ -45,7 +45,7 @@ def _prepare_create_resource(self, test_class_instance, **kwargs):
         # generated, so in_recording will be True even if live_test is false, so a random name would be given.
         # In cached mode we need to avoid this because then for tests with recordings, they would not have a moniker.
         if (self.live_test or test_class_instance.in_recording) \
-                and not (not self.live_test and test_class_instance.in_recording and self._use_cache):
+                and not (not test_class_instance.is_live and test_class_instance.in_recording and self._use_cache):
             resource_name = self.random_name
             if not self.live_test and isinstance(self, RecordingProcessor):
                 test_class_instance.recording_processors.append(self)