fix the bug where q_len==1 when chunk prefill is enabled#18

Todobe merged 1 commit intoTodobe:GLM-4.7-FlashTodobe/sgl-sglang:GLM-4.7-Flashfrom

Estrella-xx:GLM-4.7-FlashEstrella-xx/sglang:GLM-4.7-FlashCopy head branch name to clipboard