fix: change textbookSubscription

src/views/educational/textbookSubscription/components/edit.vue

@@ -228,8 +228,8 @@
     }
 
     dataSoruce.forEach((item: any) => {
-      item.studentNum = item.studentSubscriptionNumber;
-      item.teacherNum = item.teacherSubscriptionNumber;
+      item.studentNum = item.studentSubscriptionNumber || 0;
+      item.teacherNum = item.teacherSubscriptionNumber || 0;
     });
 
     const postParams = unref(modelRef);