Remove unneeded child

lib/features/sheet_viewer/widgets/touch_navigation_layer.dart

@@ -14,7 +14,6 @@ typedef PageTurnCallback = dynamic Function(int delta);
 /// - Right side: Turn page forward (+1 or +2 in two-page mode)
 class TouchNavigationLayer extends StatelessWidget {
   final PdfPageDisplay pageDisplay;
-  final Widget child;
   final Config config;
   final VoidCallback onToggleFullscreen;
   final VoidCallback onExit;
@@ -23,7 +22,6 @@ class TouchNavigationLayer extends StatelessWidget {
   const TouchNavigationLayer({
     super.key,
     required this.pageDisplay,
-    required this.child,
     required this.config,
     required this.onToggleFullscreen,
     required this.onExit,
@@ -35,7 +33,7 @@ class TouchNavigationLayer extends StatelessWidget {
     return GestureDetector(
       behavior: HitTestBehavior.opaque,
       onTapUp: (details) => _handleTap(context, details),
-      child: child,
+      child: pageDisplay,
     );
   }