Fix i18next and backend loading by replacing node_modules references with CDN links (sugarlabs#4765)

* Fix i18next loading by switching to CDN links in loader.js

* fix(i18n): add local fallback for i18next + backend and configure CDN fallback in loader.js

Author: ac-mmi

js/loader.js

@@ -28,15 +28,22 @@ requirejs.config({
         samples: "../sounds/samples",
         planet: "../js/planet",
         tonejsMidi: "../node_modules/@tonejs/midi/dist/Midi",
-        i18next: "../node_modules/i18next/dist/umd/i18next.min",
-        i18nextHttpBackend: "../node_modules/i18next-http-backend/i18nextHttpBackend.min"
+        i18next: [
+            "../lib/i18next.min",
+            "https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/i18next.min"
+        ],
+        i18nextHttpBackend: [
+            "../lib/i18nextHttpBackend.min",
+            "https://cdn.jsdelivr.net/npm/[email protected]/i18nextHttpBackend.min"
+        ]
     },
     packages: []
 });
 
 requirejs(["i18next", "i18nextHttpBackend"], function(i18next, i18nextHttpBackend) {
 
     function updateContent() {
+        console.log("asdasdasd");
         console.log("updateContent() called");  // Debugging line
         const elements = document.querySelectorAll("[data-i18n]");