fix: 上传面板关闭动效避开 contextSafe 可能为空

components/UploadModal.tsx

@@ -265,6 +265,8 @@ export default function UploadModal({ onClose, onSuccess }: UploadModalProps) {
       )
     })
 
+    if (!contextSafe) return
+
     closeAnimatedRef.current = contextSafe(() => {
       const reduced = window.matchMedia('(prefers-reduced-motion: reduce)').matches
       if (reduced || !overlayRef.current || !panelRef.current) {