fix(server): fail runs whose provider stream ends without a terminal (#19131)

Co-authored-by: GPT-6.1-Sol at high effort <noreply@openai.com>
Co-authored-by: Julius Marminge <51714798+juliusmarminge@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
e77a48e81aAlb11747 committed on 10/15/2026, 5:47:26 PM· committed by GitHubparent76cb251
4 files changedLine totals unavailable