* Adding SDPA support for RoBERTa-based models * add not is_cross_attention * fix copies * fix test * add minimal test for camembert and xlm_roberta as their test class does not inherit from ModelTesterMixin * address some review comments * use copied from * style * consistency * fix lists --------- Co-authored-by: fxmarty <9808326+fxmarty@users.noreply.github.com> Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>