fix: 增加一个demo提示

Author: xiaoyatong

src/packages/popup/demos/taro/demo4.tsx

@@ -42,6 +42,7 @@ const Demo4 = () => {
         position="bottom"
         onCloseIconClick={() => {
           console.log('onCloseIconClick')
+          setShowCloseIconStop(false)
         }}
       />
     </>