Update on "Enable aoti for preprocess"

Update torch nightly pin to 11/01 after: pytorch/pytorch#137063

Test Plan:
With pytorch/pytorch#137063:
```
pytest -c /dev/null -v -n auto examples/models/llama3_2_vision/preprocess/
```

[ghstack-poisoned]

Author: lucylq

examples/models/llama3_2_vision/preprocess/test_preprocess.py

@@ -245,7 +245,7 @@ def run_preprocess(
             image_tensor, inscribed_size, best_resolution
         )
         eager_ar = eager_ar.tolist()
-        assert torch.allclose(reference_image, eager_image, rtol=1e-4, atol=1e-4)
+        assert_expected(eager_image, reference_image, rtol=0, atol=1e-4)
         assert (
             reference_ar == eager_ar
         ), f"Eager model: expected {reference_ar} but got {eager_ar}"
@@ -256,7 +256,7 @@ def run_preprocess(
             image_tensor, inscribed_size, best_resolution
         )
         exported_ar = exported_ar.tolist()
-        assert torch.allclose(reference_image, exported_image, rtol=1e-4, atol=1e-4)
+        assert_expected(exported_image, reference_image, rtol=0, atol=1e-4)
         assert (
             reference_ar == exported_ar
         ), f"Exported model: expected {reference_ar} but got {exported_ar}"
@@ -267,7 +267,7 @@ def run_preprocess(
         et_image, et_ar = executorch_module.forward(
             (image_tensor, inscribed_size, best_resolution)
         )
-        assert torch.allclose(reference_image, et_image, rtol=1e-4, atol=1e-4)
+        assert_expected(et_image, reference_image, rtol=0, atol=1e-4)
         assert (
             reference_ar == et_ar.tolist()
         ), f"Executorch model: expected {reference_ar} but got {et_ar.tolist()}"
@@ -276,7 +276,7 @@ def run_preprocess(
         aoti_path = models["aoti_path"]
         aoti_model = torch._export.aot_load(aoti_path, "cpu")
         aoti_image, aoti_ar = aoti_model(image_tensor, inscribed_size, best_resolution)
-        assert torch.allclose(reference_image, aoti_image)
+        assert_expected(aoti_image, reference_image, rtol=0, atol=1e-4)
         assert (
             reference_ar == aoti_ar.tolist()
         ), f"AOTI model: expected {reference_ar} but got {aoti_ar.tolist()}"