Fix basedpyright type errors (#25435)

Signed-off-by: -LAN- <laipz8200@outlook.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/controllers/console/files.py

@@ -22,6 +22,7 @@ from controllers.console.wraps import (
 )
 from fields.file_fields import file_fields, upload_config_fields
 from libs.login import login_required
+from models import Account
 from services.file_service import FileService
 
 PREVIEW_WORDS_LIMIT = 3000
@@ -68,6 +69,8 @@ class FileApi(Resource):
             source = None
 
         try:
+            if not isinstance(current_user, Account):
+                raise ValueError("Invalid user account")
             upload_file = FileService.upload_file(
                 filename=file.filename,
                 content=file.read(),