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/bloom/test_modeling_flax_bloom.py

@@ -171,7 +171,6 @@ class FlaxBloomModelTester:
 @require_flax
 class FlaxBloomModelTest(FlaxModelTesterMixin, unittest.TestCase, FlaxGenerationTesterMixin):
     all_model_classes = (FlaxBloomModel, FlaxBloomForCausalLM) if is_flax_available() else ()
-    all_generative_model_classes = () if is_flax_available() else ()
 
     def setUp(self):
         self.model_tester = FlaxBloomModelTester(self)
@@ -199,7 +198,6 @@ class FlaxBloomModelTest(FlaxModelTesterMixin, unittest.TestCase, FlaxGeneration
 @require_flax
 class FlaxBloomGenerationTest(unittest.TestCase):
     all_model_classes = (FlaxBloomForCausalLM,) if is_flax_available() else ()
-    all_generative_model_classes = () if is_flax_available() else ()
 
     def setUp(self):
         self.model_id = "bigscience/bloom-560m"