修复: 打开设置窗口不再触发桌面刷新

- enableBing() 调用加 initDone 守卫，初始化阶段跳过

web/settings.html

@@ -523,7 +523,7 @@ function setWpType(type) {
   document.querySelectorAll('.wp-type-section').forEach(function(s) { s.classList.remove('visible'); });
   var sec = document.getElementById('sec-' + type);
   if (sec) sec.classList.add('visible');
-  if (type === 'bing' && currentWpType !== 'bing') {
+  if (initDone && type === 'bing' && currentWpType !== 'bing') {
     if (window.enableBing) window.enableBing();
   }
   currentWpType = type;