good first issue: fix misleading 'Reloading...' message in testnet faucet banner

[Austinaminu2]

Description

`components/layout/testnet-faucet-banner.tsx:132` shows a success message saying "Reloading..." but the component never actually reloads the page — it only auto-dismisses itself after 5 seconds.

Location

`components/layout/testnet-faucet-banner.tsx:132`

Task

Update the message to accurately describe what happens (e.g. "Funds added! This banner will close automatically." or similar), matching the actual auto-dismiss behavior.

Good for newcomers because

Simple copy fix, no logic change.