Reland "[perf][spec decoding] Skip full-vocab softmax in EAGLE draft when topk == 1 (#26235)"#26397

Qiaolin-Yu merged 3 commits into

mainsgl-project/sglang:mainfrom

revert-26358-revert-26235-eagle-topk1-softmax-skipsgl-project/sglang:revert-26358-revert-26235-eagle-topk1-softmax-skipCopy head branch name to clipboard