fix: arm overshoot swallow in handlePlayStatusNotify on real stop

[Copilot]

handlePlayStatusNotify was advancing to recordReady and setting currentClausePlayed on a real stop, but unlike handleRegionPlayEnd it never armed pendingOvershootSwallowRef. This left the component exposed to the spurious +1 segment change that fires when the recorder mounts after allowRecord turns true — which gets misread as user navigation and may auto-play the next clause.

Change

• After setCurrentClausePlayed(true) in handlePlayStatusNotify, arm the overshoot swallow, matching the existing pattern in handleRegionPlayEnd:

setCurrentClausePlayed(true);
pendingOvershootSwallowRef.current = true;   // ← added
setPhase((p) =>
  p === 'recording' || p === 'recorded' ? p : 'recordReady'
);

[nabalone]

See comment in TT-7621_pbt-record-after-playback-stops