formatted all files.

lib/common/widgets/custom_expansion_tile.dart

@@ -10,7 +10,8 @@ class CustomExpansionTile extends StatefulWidget {
   final ValueChanged<bool>? onExpansionChanged; // Notify when expansion changes
   final VoidCallback? onItemSelected; // Callback for selecting the item
 
-  CustomExpansionTile({
+  const CustomExpansionTile({
+    super.key,
     required this.title,
     this.children,
     this.initiallyExpanded = false,