fix: close SSE endpoint when browser page is reloaded

Author: a-h

.version

@@ -1 +1 @@
-0.2.753
+0.2.754

cmd/templ/generatecmd/proxy/script.js

@@ -1,9 +1,10 @@
-(function () {
+(function() {
   let templ_reloadSrc = window.templ_reloadSrc || new EventSource("/_templ/reload/events");
   templ_reloadSrc.onmessage = (event) => {
     if (event && event.data === "reload") {
       window.location.reload();
     }
   };
   window.templ_reloadSrc = templ_reloadSrc;
+  window.onbeforeunload = () => window.templ_reloadSrc.close();
 })();