Expand and Unexpand top nodes in Treetable (#4313)

packages/devtools_app/lib/src/shared/table.dart

diff --git a/packages/devtools_app/lib/src/shared/table.dart b/packages/devtools_app/lib/src/shared/table.dart
index 1a9f195..7568b9c 100644
--- a/packages/devtools_app/lib/src/shared/table.dart
+++ b/packages/devtools_app/lib/src/shared/table.dart
@@ -453,7 +453,7 @@
 
     if (widget == oldWidget) return;
 
-    if (widget.sortColumn != oldWidget.sortColumn ||
+    if (widget.sortColumn.title != oldWidget.sortColumn.title ||
         widget.sortDirection != oldWidget.sortDirection ||
         !collectionEquals(widget.dataRoots, oldWidget.dataRoots)) {
       _initData();
@@ -466,7 +466,7 @@
   void _initData() {
     dataRoots = List.generate(widget.dataRoots.length, (index) {
       final root = widget.dataRoots[index];
-      if (widget.autoExpandRoots) {
+      if (widget.autoExpandRoots && !root.isExpanded) {
         root.expand();
       }
       return root;