[v1] kernel plugin (#9274)

Co-authored-by: frozenleaves <frozen@Mac.local>

src/llamafactory/v1/plugins/data_plugins/converter.py

@@ -13,7 +13,9 @@
 # limitations under the License.
 
 
-from typing import Callable, NotRequired, TypedDict
+from typing import Callable, TypedDict
+
+from typing_extensions import NotRequired
 
 from ...extras.types import Sample, SFTSample