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/gemma3/test_modeling_gemma3.py

@@ -344,7 +344,7 @@ class Gemma3Vision2TextModelTest(ModelTesterMixin, GenerationTesterMixin, unitte
 
     def test_automodelforcausallm(self):
         """
-        Regression test for #36741 -- make sure `AutoModelForCausalLM` works with a Gemma3 config, i.e. that
+        Regression test for #36741/#36917 -- make sure `AutoModelForCausalLM` works with a Gemma3 config, i.e. that
         `AutoModelForCausalLM.from_pretrained` pulls the text config before loading the model
         """
         config = self.model_tester.get_config()
@@ -352,7 +352,7 @@ class Gemma3Vision2TextModelTest(ModelTesterMixin, GenerationTesterMixin, unitte
         with tempfile.TemporaryDirectory() as tmp_dir:
             model.save_pretrained(tmp_dir)
             for_causal_lm = AutoModelForCausalLM.from_pretrained(tmp_dir)
-            self.assertIsInstance(for_causal_lm, Gemma3ForCausalLM)
+            self.assertIsInstance(for_causal_lm, Gemma3ForConditionalGeneration)
 
 
 @slow

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."""