allow button re-enabling

Author: momo3404

app/javascript/src/utils/copyToken.js

@@ -23,8 +23,10 @@ const initCopyToken = () => {
       // Restore after 2s
       setTimeout(() => {
         button.innerHTML = originalHTML;
+        button.disabled = false;
       }, 2000);
     }).catch(() => {
+      button.disabled = false;
       alert('Failed to copy token');
     });
   });