feat(scene): rotate video previews like images

Reuse previewRotationDeg for video scenes across editor, control,
presentation and overlays via ContainedVideo layout parity.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/renderer/shared/PresentationView.tsx

@@ -175,6 +175,7 @@ export function PresentationView({
         <div className={styles.fill}>
           <ContainedVideo
             url={originalUrl}
+            rotationDeg={rot}
             videoRef={videoElRef}
             muted
             playsInline