handlers: guard latency metrics when timestamps are absent#1963

liu-cong with Copilot wants to merge 2 commits into

mainllm-d/llm-d-router:mainfrom

copilot/fix-end-of-stream-latency-metricsllm-d/llm-d-router:copilot/fix-end-of-stream-latency-metricsCopy head branch name to clipboard