Clean up Web Audio nodes after invader hit sound

Agent-Logs-Url: https://github.com/NextCommunity/NextCommunity.github.io/sessions/2e21a107-94cf-4f0c-8d3f-8dae8d66ef0b

Co-authored-by: jbampton <418747+jbampton@users.noreply.github.com>

Author: Copilot

src/assets/js/games/space-invaders.js

@@ -251,6 +251,10 @@ const SpaceInvaders = (() => {
 
     oscillator.connect(gainNode);
     gainNode.connect(_audioContext.destination);
+    oscillator.onended = () => {
+      oscillator.disconnect();
+      gainNode.disconnect();
+    };
 
     oscillator.start(now);
     oscillator.stop(now + 0.1);