change back the check for adding a service worker because tests would get constant errors

src/registerServiceWorker.ts

@@ -2,7 +2,7 @@
 
 import { register } from "register-service-worker";
 
-// This used to be only done when: import.meta.env.NODE_ENV === "production"
+if (import.meta.env.NODE_ENV === "production") {
   register("/sw_scripts-combined.js", {
     ready() {
       console.log(
@@ -31,3 +31,4 @@ register("/sw_scripts-combined.js", {
       console.error("Error during service worker registration:", error);
     },
   });
+}