add the missing flash attention test marker (#32419)

* add flash attention check

* fix

* fix

* add the missing marker

* bug fix

* add one more

* remove order

* add one more

tests/models/mistral/test_modeling_mistral.py

@@ -576,9 +576,10 @@ class MistralIntegrationTest(unittest.TestCase):
         backend_empty_cache(torch_device)
         gc.collect()
 
+    @require_flash_attn
     @require_bitsandbytes
     @slow
-    @require_flash_attn
+    @pytest.mark.flash_attn_test
     def test_model_7b_long_prompt(self):
         EXPECTED_OUTPUT_TOKEN_IDS = [306, 338]
         # An input with 4097 tokens that is above the size of the sliding window