[LoRA] Torch native backend: rework implementation and updated tests (#15187)

test/manual/lora/test_lora_cuda_graph.py

@@ -17,7 +17,7 @@ import os
 import unittest
 from typing import List
 
-from lora_utils import (
+from sglang.test.lora_utils import (
     ALL_OTHER_LORA_MODELS,
     CI_LORA_MODELS,
     DEFAULT_PROMPTS,
@@ -26,7 +26,6 @@ from lora_utils import (
     run_lora_test_by_batch,
     run_lora_test_one_by_one,
 )
-
 from sglang.test.test_utils import CustomTestCase, is_in_ci
 
 TEST_CUDA_GRAPH_PADDING_PROMPTS = [