fix dataset remove error

sync_storage.py

@@ -383,7 +383,7 @@ This repository is automatically managed by the Open WebUI sync system.
             with tempfile.TemporaryDirectory() as tmpdir:
                 logger.info(f"Step 2/5: Downloading current files to a temporary location...")
                 for file_path in current_files:
-                    if file_path not in metadata["archives"]:
+                    if file_path.startswith("data-") and (file_path not in metadata["archives"]):
                         logger.info(f"Skipping {file_path} (not in archive)")
                         continue
                     self.api.hf_hub_download(