Navigation: Add close button to dashboard settings (#61366)

public/app/features/dashboard/components/DashboardSettings/DashboardSettings.tsx

@@ -58,6 +58,11 @@ export function DashboardSettings({ dashboard, editview, pageNav, sectionNav }:
   const size = config.featureToggles.topnav ? 'sm' : 'md';
 
   const actions = [
+    config.featureToggles.topnav && (
+      <Button variant="secondary" key="close" fill="outline" size={size} onClick={onClose}>
+        Close
+      </Button>
+    ),
     canSaveAs && (
       <SaveDashboardAsButton
         dashboard={dashboard}