🚨Early-error🚨 config will error out if output_attentions=True and the attn implementation is wrong (#38288)

* Protect ParallelInterface

* early error out on output attention setting for no wraning in modeling

* modular update

* fixup

* update model tests

* update

* oups

* set model's config

* more cases

* ??

* properly fix

* fixup

* update

* last onces

* update

* fix?

* fix wrong merge commit

* fix hub test

* nits

* wow I am tired

* updates

* fix pipeline!

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Co-authored-by: Lysandre <hi@lysand.re>

tests/utils/test_configuration_utils.py

@@ -189,6 +189,7 @@ class ConfigTestUtils(unittest.TestCase):
         self.assertListEqual(
             missing_keys,
             [
+                "_output_attentions",
                 "is_encoder_decoder",
                 "_name_or_path",
                 "_commit_hash",