added PageStorageKey to categories list to maintain its scroll position (#1088)

lib/pangea/widgets/chat_list/analytics_summary/analytics_popup/analytics_popup.dart

@@ -97,6 +97,8 @@ class AnalyticsPopupState extends State<AnalyticsPopup> {
       );
     } else {
       dialogContent = ListView.builder(
+        // Add a key to the ListView to persist the scroll position
+        key: const PageStorageKey<String>('categoryList'),
         itemCount: _sortedEntries.length,
         itemBuilder: (context, index) {
           final category = _sortedEntries[index];