Skip some export tests on torch 2.7 (#38677)

* skip

* fix

* better check

* Update import_utils.py

---------

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>
Co-authored-by: Cyril Vallez <cyril.vallez@gmail.com>

tests/models/vitmatte/test_modeling_vitmatte.py

@@ -25,6 +25,7 @@ from transformers.testing_utils import (
     torch_device,
 )
 from transformers.utils import is_torch_available, is_vision_available
+from transformers.utils.import_utils import get_torch_major_and_minor_version
 
 from ...test_configuration_common import ConfigTester
 from ...test_modeling_common import ModelTesterMixin, floats_tensor
@@ -143,6 +144,7 @@ class VitMatteModelTest(ModelTesterMixin, PipelineTesterMixin, unittest.TestCase
     test_resize_embeddings = False
     test_head_masking = False
     test_torch_exportable = True
+    test_torch_exportable_strictly = not get_torch_major_and_minor_version() == "2.7"
 
     def setUp(self):
         self.model_tester = VitMatteModelTester(self)