Fix too many SSE conn open in dev mode

Signed-off-by: gearnode <bryan@frimin.fr>

apps/console/scripts/esbuild.mjs

@@ -62,7 +62,9 @@ const hotReloading = {
     build.initialOptions.banner.js = `
       ${build.initialOptions.banner.js || ""};
 
-      new EventSource('/esbuild').addEventListener('change', e => {
+      if (!window.__esbuild_event_source__) {
+        window.__esbuild_event_source__ = true;
+        new EventSource('/esbuild').addEventListener('change', (e) => {
           const { added, removed, updated } = JSON.parse(e.data);
 
           if (!added.length && !removed.length && updated.length === 1) {
@@ -81,6 +83,7 @@ const hotReloading = {
 
           location.reload();
         });
+      }
     `;
     return;
   },