Navigation: Enable new navigation by default (#65335)

* enable topnav by default

* rename dashboard-search to dashboard-browse

* wait for time to be set in e2e test before attempting to click button

* update toggle description

e2e/shared/smokeTestScenario.ts

@@ -8,7 +8,8 @@ export const smokeTestScenario = {
   skipScenario: false,
   loginViaApi: false,
   scenario: () => {
-    e2e.flows.openDashboard();
+    // wait for time to be set to account for any layout shift
+    e2e().contains('2020-01-01 00:00:00 to 2020-01-01 06:00:00').should('be.visible');
     e2e.components.PageToolbar.item('Add panel').click();
     e2e.pages.AddDashboard.addNewPanel().click();