Fix TS errors

Author: Tkaixiang

src/commons/mocks/BackendMocks.ts

@@ -343,7 +343,11 @@ export function* mockBackendSaga(): SagaIterator {
       return gradingQuestion;
     });
     yield put(
-      actions.updateGrading(submissionId, { answers: newGrading, assessment: grading.assessment })
+      actions.updateGrading(submissionId, {
+        answers: newGrading,
+        assessment: grading.assessment,
+        enable_llm_grading: false
+      })
     );
     yield call(showSuccessMessage, 'Submitted!', 1000);
   };

src/commons/sagas/BackendSaga.ts

@@ -637,7 +637,11 @@ function* sendGrade(
   });
 
   yield put(
-    actions.updateGrading(submissionId, { answers: newGrading, assessment: grading.assessment })
+    actions.updateGrading(submissionId, {
+      answers: newGrading,
+      assessment: grading.assessment,
+      enable_llm_grading: false
+    })
   );
 }