EAGLE 3: Fix preamble so that measured speedup over Eagle 1 becomes 32% instead of 5% on MTBench#25916

simon-mo merged 2 commits intovllm-project:mainvllm-project/vllm:mainfrom

ekagra-ranjan:er-e3-optekagra-ranjan/vllm:er-e3-optCopy head branch name to clipboard