[codex] fix: tolerate invalid latest user message timestamps (#3521)

Co-authored-by: Codex <codex@openai.com>
Co-authored-by: Julius Marminge <julius0216@outlook.com>
43e2aeab38Wout Stiens committed on 7/17/2026, 9:24:52 PM· committed by GitHubparentb655a9f
2 files changedLine totals unavailable