Deprecate #36741 and map Causal to Conditional (#36917)

* deprecate the prev fix

* reword warning and update docs

* reword warning

* tests

* dont bloat `get_text_config()`

tests/models/mistral3/test_processor_mistral3.py

@@ -20,7 +20,7 @@ import unittest
 import requests
 
 from transformers import PixtralProcessor
-from transformers.testing_utils import require_vision
+from transformers.testing_utils import require_read_token, require_vision
 from transformers.utils import is_torch_available, is_vision_available
 
 from ...test_processing_common import ProcessorTesterMixin
@@ -35,6 +35,7 @@ if is_vision_available():
 
 
 @require_vision
+@require_read_token
 class Mistral3ProcessorTest(ProcessorTesterMixin, unittest.TestCase):
     """This tests Pixtral processor with the new `spatial_merge_size` argument in Mistral3."""