Fix: Fixed styling tab not opening on themes without style variations…

… on mobile & desktop (WordPress#67537)

Co-authored-by: Mayank-Tripathi32 <mayanktripathi32@git.wordpress.org>
Co-authored-by: annezazu <annezazu@git.wordpress.org>

packages/edit-site/src/components/sidebar-navigation-screen-global-styles/index.js

@@ -41,7 +41,13 @@ export function SidebarNavigationItemGlobalStyles( props ) {
 			/>
 		);
 	}
-	return <SidebarNavigationItem { ...props } />;
+	return (
+		<SidebarNavigationItem
+			{ ...props }
+			to="/styles"
+			aria-current={ name === 'styles' }
+		/>
+	);
 }
 
 export default function SidebarNavigationScreenGlobalStyles() {