transformers

453079c7 - 🚨🚨 Fix beam score calculation issue for decoder-only models (#27351)

🚨🚨 Fix beam score calculation issue for decoder-only models (#27351) * Fix beam score calculation issue for decoder-only models * Update beam search test and fix code quality issue * Fix beam_sample, group_beam_search and constrained_beam_search * Split test for pytorch and TF, add documentation --------- Co-authored-by: Xin Qiu <xin.qiu@sentient.ai>