[Auto Sync] Update test_deterministic_utils.py (20251023) (#12022)

Co-authored-by: Stefan He <hebiaobuaa@gmail.com>

python/sglang/test/test_deterministic_utils.py

@@ -23,9 +23,13 @@ class TestDeterministicBase(CustomTestCase):
     def get_server_args(cls):
         return COMMON_SERVER_ARGS
 
+    @classmethod
+    def get_model(cls):
+        return DEFAULT_MODEL
+
     @classmethod
     def setUpClass(cls):
-        cls.model = DEFAULT_MODEL
+        cls.model = cls.get_model()
         cls.base_url = DEFAULT_URL_FOR_TEST
         if "--attention-backend" not in cls.get_server_args():
             raise unittest.SkipTest("Skip the base test class")