fix(comment): disqus doesn't follow theme mode switching

_includes/comments/disqus.html

@@ -15,7 +15,6 @@
   };
 
   /* Lazy loading */
-
   var disqus_observer = new IntersectionObserver(function (entries) {
     if(entries[0].isIntersecting) {
         (function () {
@@ -32,8 +31,9 @@
   disqus_observer.observe(document.querySelector('#disqus_thread'));
 
   /* Auto switch theme */
-
   function reloadDisqus() {
+    if (event.source === window && event.data &&
+      event.data.direction === ModeToggle.ID) {
       /* Disqus hasn't been loaded */
       if (typeof DISQUS === "undefined") {
         return;
@@ -43,12 +43,12 @@
         DISQUS.reset({ reload: true, config: disqus_config });
       }
     }
+  }
 
   const modeToggle = document.querySelector(".mode-toggle");
 
   if (typeof modeToggle !== "undefined") {
-    /*  modeToggle.addEventListener('click', reloadDisqus); // not pretty for 'color-scheme'  */
+    window.addEventListener("message", reloadDisqus);
-    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', reloadDisqus);
   }
 
 </script>