fix: create directory now ignore conflict error, it will return the existed folder

pkg/filesystem/hooks.go

@@ -203,14 +203,10 @@ func SlaveAfterUpload(session *serializer.UploadSession) Hook {
 func GenericAfterUpload(ctx context.Context, fs *FileSystem, fileHeader fsctx.FileHeader) error {
 	fileInfo := fileHeader.Info()
 
-	// 检查路径是否存在，不存在就创建
-	isExist, folder := fs.IsPathExist(fileInfo.VirtualPath)
-	if !isExist {
-		newFolder, err := fs.CreateDirectory(ctx, fileInfo.VirtualPath)
-		if err != nil {
-			return err
-		}
-		folder = newFolder
+	// 创建或查找根目录
+	folder, err := fs.CreateDirectory(ctx, fileInfo.VirtualPath)
+	if err != nil {
+		return err
 	}
 
 	// 检查文件是否存在