[Misc] Rename think_start_str/think_end_str to reasoning_start_str/reasoning_end_str#38242

njhill merged 6 commits intovllm-project:mainvllm-project/vllm:mainfrom

chaunceyjiang:rename_think_start_end_strchaunceyjiang/vllm:rename_think_start_end_strCopy head branch name to clipboard