Add "Play Again" Link to Leaderboard Navbar for Better User Navigation

Currently, the navigation bar on the Leaderboard page does not include a [Play Again] link, forcing users to click the browser's back button to restart the game. This creates a less intuitive navigation experience.

By adding a [Play Again] link to the navbar, users will be able to quickly restart the game directly from the Leaderboard page, enhancing convenience and usability.

Proposed Solution:

Add a [Play Again] link to the Leaderboard navbar, allowing users to restart the game seamlessly without needing to use the browser's back functionality. This small addition will improve the user experience by providing an easier way to restart the game.