Show globe icon on language button

wwwroot/app.js

@@ -210,14 +210,9 @@ async function main() {
 
 main();
 
-function languageEmoji(lang) {
-  const map = { en: "🇬🇧", de: "🇩🇪" };
-  return map[lang] || "🌐";
-}
-
 function updateLanguageButtons() {
   document.querySelectorAll(".lang-button").forEach((btn) => {
-    btn.textContent = languageEmoji(getLanguage());
+    btn.textContent = "🌐";
     btn.title = t("lang.label");
     btn.setAttribute("aria-label", t("lang.label"));
   });