fix(@vant/use): useClickAway failed in SSR (#9899)

packages/vant-use/src/useClickAway/index.ts

@@ -1,4 +1,5 @@
 import { Ref, unref } from 'vue';
+import { inBrowser } from '..';
 import { useEventListener } from '../useEventListener';
 
 export type UseClickAwayOptions = {
@@ -10,6 +11,10 @@ export function useClickAway(
   listener: EventListener,
   options: UseClickAwayOptions = {}
 ) {
+  if (!inBrowser) {
+    return;
+  }
+
   const { eventName = 'click' } = options;
 
   const onClick = (event: Event) => {