transformers

3689287d - Migrate GPT2 to standardized output capture decorators (#43983)

Migrate GPT2 to standardized output capture decorators (#43983) * Migrate GPT2 to standardized output capture decorators * Sync DecisionTransformer GPT2Block copy after GPT2 output-capture refactor * Align DecisionTransformer GPT2 encoder outputs with capture_outputs * Address review comments on DecisionTransformer output kwargs