Fix: Add rel="noopener noreferrer" to embed watch button

This commit mitigates a reverse tabnabbing vulnerability by ensuring
that the external link in the embed player opens with proper
security attributes.

Co-authored-by: PR0M3TH3AN <[email protected]>

embed.html

@@ -96,6 +96,7 @@
               id="embedWatchButton"
               href="#"
               target="_blank"
+              rel="noopener noreferrer"
               class="flex items-center gap-2 rounded-full border border-white/20 bg-white/10 px-3 py-1.5 text-xs font-medium text-white transition-colors hover:bg-white/20 backdrop-blur-md"
             >
               <span>Watch on</span>