[P/D] force with_prefill true after allreduce in kv producer#3768

MengqingCao merged 2 commits intovllm-project:mainvllm-project/vllm-ascend:mainfrom

liziyu179:fix_with_prefill_kv_producerliziyu179/vllm-ascend:fix_with_prefill_kv_producerCopy head branch name to clipboard