Reset ModelPipelineFactory in test teardown

Updates the test teardown to explicitly reset the ModelPipelineFactory instance, ensuring tests do not interfere with each other by sharing state.

Author: mabashian

ansible_ai_connect/main/tests/test_utils.py

@@ -26,6 +26,7 @@
 from django.apps import apps
 from django.test import override_settings
 
+from ansible_ai_connect.ai.api.model_pipelines.factory import ModelPipelineFactory
 from ansible_ai_connect.ai.api.model_pipelines.tests import mock_config
 from ansible_ai_connect.main.utils import has_wca_providers
 from ansible_ai_connect.test_utils import WisdomServiceLogAwareTestCase
@@ -35,7 +36,8 @@
 class TestHasWCAProvidersWithWCAProvider(WisdomServiceLogAwareTestCase):
     def tearDown(self):
         """Reset pipeline factory to avoid test interference."""
-        apps.get_app_config("ai")._pipeline_factory = None
+        # Force recreation of the factory with current configuration
+        apps.get_app_config("ai")._pipeline_factory = ModelPipelineFactory()
         super().tearDown()
 
     def test_returns_true_with_wca_provider(self):