feat: add root prefix before operate

internal/fs/util.go

@@ -0,0 +1,14 @@
+package fs
+
+import (
+	"github.com/alist-org/alist/v3/internal/driver"
+)
+
+func containsByName(files []driver.FileInfo, file driver.FileInfo) bool {
+	for _, f := range files {
+		if f.GetName() == file.GetName() {
+			return true
+		}
+	}
+	return false
+}