CI: avoid human error, automatically infer generative models (#33212)

* tmp commit

* move tests to the right class

* remove ALL all_generative_model_classes = ...

* skip tf roberta

* skip InstructBlipForConditionalGenerationDecoderOnlyTest

* videollava

* reduce diff

* reduce diff

* remove  on vlms

* fix a few more

* manual rebase bits

* more manual rebase

* remove all manual generative model class test entries

* fix up to ernie

* a few more removals

* handle remaining cases

* recurrent gemma

* it's better here

* make fixup

* tf idefics is broken

* tf bert + generate is broken

* don't touch tf :()

* don't touch tf :(

* make fixup

* better comments for test skips

* revert tf changes

* remove empty line removal

* one more

* missing one

tests/models/paligemma2/test_modeling_paligemma2.py

@@ -175,7 +175,6 @@ class PaliGemma2ForConditionalGenerationModelTest(ModelTesterMixin, GenerationTe
     """
 
     all_model_classes = (PaliGemmaForConditionalGeneration,) if is_torch_available() else ()
-    all_generative_model_classes = (PaliGemmaForConditionalGeneration,) if is_torch_available() else ()
     pipeline_model_mapping = {"image-text-to-text": PaliGemmaForConditionalGeneration}
     fx_compatible = False
     test_pruning = False