llm/custom_ops: follow test code conventions

Differential Revision: D85428922

Pull Request resolved: #15375

Author: gpires-meta

extension/llm/custom_ops/test_sdpa_with_kv_cache.py

@@ -282,7 +282,7 @@ def setUp(self):
         self.is_causal = True
 
 
-class SDPAWithDynamicShape(unittest.TestCase):
+class SDPAWithDynamicShapeTest(unittest.TestCase):
 
     def setUp(self):
         torch.manual_seed(42)