perf: add correct passive flag to improve scroll performance (#10951)

packages/vant/src/dropdown-menu/DropdownMenu.tsx

@@ -145,7 +145,10 @@ export default defineComponent({
 
     linkChildren({ id, props, offset });
     useClickAway(root, onClickAway);
-    useEventListener('scroll', onScroll, { target: scrollParent });
+    useEventListener('scroll', onScroll, {
+      target: scrollParent,
+      passive: true,
+    });
 
     return () => (
       <div ref={root} class={bem()}>

packages/vant/src/index-bar/IndexBar.tsx

@@ -182,7 +182,10 @@ export default defineComponent({
       nextTick(onScroll);
     };
 
-    useEventListener('scroll', onScroll, { target: scrollParent });
+    useEventListener('scroll', onScroll, {
+      target: scrollParent,
+      passive: true,
+    });
 
     onMounted(init);
 

packages/vant/src/list/List.tsx

@@ -166,7 +166,10 @@ export default defineComponent({
 
     useExpose<ListExpose>({ check });
 
-    useEventListener('scroll', check, { target: scrollParent });
+    useEventListener('scroll', check, {
+      target: scrollParent,
+      passive: true,
+    });
 
     return () => {
       const Content = slots.default?.();

packages/vant/src/sticky/Sticky.tsx

@@ -140,7 +140,10 @@ export default defineComponent({
       (value) => emit('change', value)
     );
 
-    useEventListener('scroll', onScroll, { target: scrollParent });
+    useEventListener('scroll', onScroll, {
+      target: scrollParent,
+      passive: true,
+    });
     useVisibilityChange(root, onScroll);
 
     return () => (

packages/vant/src/tabs/Tabs.tsx

@@ -485,7 +485,10 @@ export default defineComponent({
     onActivated(setLine);
     onPopupReopen(setLine);
     onMountedOrActivated(init);
-    useEventListener('scroll', onScroll, { target: scroller });
+    useEventListener('scroll', onScroll, {
+      target: scroller,
+      passive: true,
+    });
 
     linkChildren({
       id,