Refactor ImageModal component for improved layout and responsiveness

- Updated ImageModal styles to include overflow handling and a maximum height for better usability.
- Adjusted the structure to place the enlarged image at the top, enhancing visual presentation.
- Removed the redundant image container to streamline the component.

src/layouts/Layout.astro

@@ -16,6 +16,7 @@ import LanguagePersistence from '~/components/LanguagePersistence.astro';
 import GlobalBackground from '~/components/ui/GlobalBackground.astro';
 import CookieBanner from '~/components/CookieBanner.astro';
 import BackToTop from '~/components/ui/BackToTop.astro';
+import ImageModal from '~/components/ui/ImageModal.astro';
 
 // Comment the line below to disable View Transitions
 import { ClientRouter } from 'astro:transitions';
@@ -83,5 +84,6 @@ const { language, textDirection } = I18N;
       })(window, document, 'script', 'https://chat.365devnet.eu/livechat');
     </script>
     <!-- End of Rocket.Chat Livechat Script -->
+    <ImageModal />
   </body>
 </html>