refactor: update admin ui (#13280)

### What problem does this PR solve?

Update for Admin UI:
- Update file picker input in **Registration whitelist** > **Import from
Excel** modal
- Modify DOM structure of **Sandbox Settings** and move several
hardcoded texts into translation files

### Type of change

- [x] Refactoring

web/src/components/ui/audio-button.tsx

@@ -389,7 +389,7 @@ export const AudioButton = ({
           <div
             className="
             absolute inset-0 rounded-full border-2 border-state-success
-            animate-ping duration-[4s] opacity-75 pointer-events-none"
+            animate-ping opacity-75 pointer-events-none"
           />
         )}