chore(file_manager): Reformat

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/core/file/file_manager.py

@@ -80,9 +80,7 @@ def to_prompt_message_content(
     # Check if file type is supported
     if f.type not in prompt_class_map:
         # For unsupported file types, return a text description
-        return TextPromptMessageContent(
+        return TextPromptMessageContent(data=f"[Unsupported file type: {f.filename} ({f.type.value})]")
-            data=f"[Unsupported file type: {f.filename} ({f.type.value})]"
-        )
 
     # Process supported file types
     params = {