fix(studio): ensure GSAP timeline stays paused after seek

Call tl.pause() both before AND after tl.seek() in the adapter.
GSAP's seek() can reactivate a timeline depending on internal state;
the second pause() guarantees it stays frozen at the seeked position.

packages/studio/src/player/hooks/useTimelinePlayer.ts

@@ -407,16 +407,6 @@ export function useTimelinePlayer() {
         if (usePlayerStore.getState().isPlaying) setIsPlaying(false);
         shuttleDirectionRef.current = null;
         shuttleSpeedIndexRef.current = 0;
-        try {
-          const doc = iframeRef.current?.contentDocument;
-          if (doc) {
-            for (const el of doc.querySelectorAll("video, audio")) {
-              (el as HTMLMediaElement).pause();
-            }
-          }
-        } catch {
-          /* cross-origin */
-        }
       }
       return true;
     },

packages/studio/src/player/lib/playbackAdapter.ts

@@ -135,8 +135,10 @@ export function wrapTimeline(tl: TimelineLike): PlaybackAdapter {
     play: () => tl.play(),
     pause: () => tl.pause(),
     seek: (t, options) => {
-      if (!options?.keepPlaying) tl.pause();
+      const shouldPause = !options?.keepPlaying;
+      if (shouldPause) tl.pause();
       tl.seek(t);
+      if (shouldPause) tl.pause();
     },
     getTime: () => tl.time(),
     getDuration: () => tl.duration(),