chore: re-enable isort enforcement (#1802)

# What does this PR do?

Re-enable isort enforcement.

It was disabled in 1a73f8305b, probably by
mistake.

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>

tests/unit/providers/nvidia/conftest.py

@@ -5,9 +5,10 @@
 # the root directory of this source tree.
 
 import asyncio
-import pytest
 from unittest.mock import AsyncMock, MagicMock, patch
 
+import pytest
+
 mock_session = MagicMock()
 mock_session.closed = False
 mock_session.close = AsyncMock()

tests/unit/providers/nvidia/test_parameters.py

@@ -8,15 +8,16 @@ import os
 import unittest
 import warnings
 from unittest.mock import patch
-import pytest
 
+import pytest
 from llama_stack_client.types.algorithm_config_param import LoraFinetuningConfig
 from llama_stack_client.types.post_training_supervised_fine_tune_params import (
     TrainingConfig,
     TrainingConfigDataConfig,
-    TrainingConfigOptimizerConfig,
     TrainingConfigEfficiencyConfig,
+    TrainingConfigOptimizerConfig,
 )
+
 from llama_stack.providers.remote.post_training.nvidia.post_training import (
     NvidiaPostTrainingAdapter,
     NvidiaPostTrainingConfig,

tests/unit/providers/nvidia/test_supervised_fine_tuning.py

@@ -6,10 +6,10 @@
 
 import os
 import unittest
-from unittest.mock import patch
 import warnings
-import pytest
+from unittest.mock import patch
 
+import pytest
 from llama_stack_client.types.algorithm_config_param import LoraFinetuningConfig, QatFinetuningConfig
 from llama_stack_client.types.post_training_supervised_fine_tune_params import (
     TrainingConfig,
@@ -18,11 +18,11 @@ from llama_stack_client.types.post_training_supervised_fine_tune_params import (
 )
 
 from llama_stack.providers.remote.post_training.nvidia.post_training import (
+    ListNvidiaPostTrainingJobs,
     NvidiaPostTrainingAdapter,
     NvidiaPostTrainingConfig,
-    NvidiaPostTrainingJobStatusResponse,
-    ListNvidiaPostTrainingJobs,
     NvidiaPostTrainingJob,
+    NvidiaPostTrainingJobStatusResponse,
 )