test: use canonical transfer imports

tests/test_transhandler_special_extra.py

@@ -7,7 +7,8 @@ from app.application.transfer import TransferPlanningInput
 from app.domain.context import MediaInfo
 from app.domain.meta.metavideo import MetaVideo
 from app.modules.filemanager.transhandler import TransHandler
-from app.schemas import FileItem, TransferInfo
+from app.schemas.file import FileItem
+from app.schemas.transfer import TransferInfo
 from app.schemas.types import MediaType