fix(server): provider sessions clean up when their start is interrupted (#15571)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
4b5c604853Julius Marminge committed on 10/7/2026, 12:12:49 AM· committed by GitHubparent7202ba6
10 files changedLine totals unavailable