[Feat] Support async_chunk additional_information delivery to V2 model runner#2607

Sy0307 wants to merge 1 commit intovllm-project:dev/migrate-MR-v2vllm-project/vllm-omni:dev/migrate-MR-v2from

Sy0307:fix/v2-improvements-on-2522Sy0307/vllm-omni:fix/v2-improvements-on-2522Copy head branch name to clipboard