fix: set event handlers in DOMContentLoaded

popup/popup.js

@@ -169,6 +169,8 @@ function renderWords() {
   }
 }
 
+document.addEventListener('DOMContentLoaded', () => {
+  localizePage();
   document.getElementById("selectAllBtn").onclick = () => {
     const list = lists[currentListIndex];
     list.words.forEach((_, index) => {
@@ -334,8 +336,6 @@ function localizePage() {
     });
   }
 
-document.addEventListener('DOMContentLoaded', localizePage);
-
   const toggle = document.getElementById('themeToggle');
   const body = document.body;
 
@@ -368,3 +368,4 @@ document.getElementById("deselectAllBtn").onclick = () => {
   };
 
   load();
+});