Dashboard: Enable feature toggle emptyDashboardPage by default (#65464)

* enable FF emptyDashboardPage by default

* fix smoke test for creating a panel after enabling FF emptyDashboardPage by default

packages/grafana-e2e-selectors/src/selectors/components.ts

@@ -256,6 +256,7 @@ export const Components = {
   PageToolbar: {
     container: () => '.page-toolbar',
     item: (tooltip: string) => `${tooltip}`,
+    itemButton: (title: string) => `data-testid ${title}`,
   },
   QueryEditorToolbarItem: {
     button: (title: string) => `QueryEditor toolbar item button ${title}`,

packages/grafana-e2e-selectors/src/selectors/pages.ts

@@ -42,6 +42,7 @@ export const Pages = {
   },
   AddDashboard: {
     url: '/dashboard/new',
+    itemButton: (title: string) => `data-testid ${title}`,
     addNewPanel: 'Add new panel',
     addNewRow: 'Add new row',
     addNewPanelLibrary: 'Add new panel from panel library',