NestedFolders: make sure DashboardPage code is feature toggled correc… (#68606)

NestedFolders: make sure DashboardPage code is feature toggled correctly (#68602)

make sure DashboardPage code is feature toggled correctly

(cherry picked from commit bbb6795757)

public/app/features/dashboard/containers/DashboardPage.tsx

@@ -545,12 +545,22 @@ function updateStatePageNavFromProps(props: Props, state: State): State {
 
   // Check if folder changed
   const { folderTitle, folderUid } = dashboard.meta;
-  const folderNavModel = folderUid ? getNavModel(navIndex, `folder-dashboards-${folderUid}`).main : undefined;
   if (folderTitle && folderUid && pageNav && pageNav.parentItem?.text !== folderTitle) {
-    pageNav = {
-      ...pageNav,
-      parentItem: folderNavModel,
-    };
+    if (config.featureToggles.nestedFolders) {
+      const folderNavModel = folderUid ? getNavModel(navIndex, `folder-dashboards-${folderUid}`).main : undefined;
+      pageNav = {
+        ...pageNav,
+        parentItem: folderNavModel,
+      };
+    } else {
+      pageNav = {
+        ...pageNav,
+        parentItem: {
+          text: folderTitle,
+          url: `/dashboards/f/${dashboard.meta.folderUid}`,
+        },
+      };
+    }
   }
 
   if (props.route.routeName === DashboardRoutes.Path) {