fix(web): keep fan range picker open until apply

reaction_board/web/static/views/fans.js

@@ -112,7 +112,10 @@ function setupRangePicker(root, { start, end, defaultDate }) {
 
   pickerCleanup?.();
   const onDocumentClick = (event) => {
-    if (!popover.hidden && !picker.contains(event.target)) close();
+    if (popover.hidden) return;
+    // 事件路径在派发时确定，即使点击后 grid 被重绘，仍能识别为弹层内部点击。
+    if (event.composedPath().includes(picker)) return;
+    close();
   };
   const onKeydown = (event) => {
     if (event.key === "Escape" && !popover.hidden) close();