fix(core): Wait for detached sub-workflows before the worker stops its task runner (#37737)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Emilia committed 2d ago

afc4a54798bbed080dad6b68231655a34d4ed14d

Parent: 6828320

Committed by GitHub <noreply@github.com> on 9/4/2026, 3:41:31 PM