Fix mock patching in test_check_nvidia_smi_hal_parity.py

Author: theap06

gcm/tests/health_checks_tests/test_check_nvidia_smi_hal_parity.py

@@ -1,5 +1,6 @@
 # Copyright (c) Meta Platforms, Inc. and affiliates.
 # All rights reserved.
+import sys
 from unittest.mock import patch
 
 from gcm.health_checks.checks.check_nvidia_smi import NvidiaSmiCliImpl
@@ -8,11 +9,13 @@
 
 def test_nvidia_smi_cli_impl_uses_hal_adapter() -> None:
     # Patch default_backend_factories to avoid actual registry access
+    # We use patch.object on the module to avoid ambiguity because
+    # gcm.health_checks.checks.check_nvidia_smi resolves to the command function
+    # when accessed via package attribute traversal in mock.patch string.
+    module = sys.modules[NvidiaSmiCliImpl.__module__]
     with (
-        patch("gcm.health_checks.checks.check_nvidia_smi.default_backend_factories"),
-        patch(
-            "gcm.health_checks.checks.check_nvidia_smi.AcceleratorManager"
-        ) as MockManager,
+        patch.object(module, "default_backend_factories"),
+        patch.object(module, "AcceleratorManager") as MockManager,
     ):
         # Mock manager instance
         manager_instance = MockManager.return_value