修复的bug

1.小程序一键设置下级用户的抽佣比例->解决了最底层用户无法设置抽佣比例

src/main/java/com/greenorange/promotion/service/project/impl/ProjectCommissionServiceImpl.java

@@ -376,6 +376,9 @@ public class ProjectCommissionServiceImpl extends ServiceImpl<ProjectCommissionM
     @Override
     @Transactional
     public void batchUpdateSubUserMyUnitPrice(List<SubUserProjectCommission> subCommissionList) {
+        if (subCommissionList == null || subCommissionList.isEmpty()) {
+            return;
+        }
         StringBuilder sql = new StringBuilder("UPDATE sub_user_project_commission SET myUnitPrice = CASE id ");
 
         // 为每个记录构建 WHEN 条件
@@ -404,6 +407,9 @@ public class ProjectCommissionServiceImpl extends ServiceImpl<ProjectCommissionM
     @Override
     @Transactional
     public void batchUpdateMyUnitPrice(List<ProjectCommission> projectCommissionList) {
+        if (projectCommissionList == null || projectCommissionList.isEmpty()) {
+            return;
+        }
         StringBuilder sql = new StringBuilder("UPDATE project_commission SET myUnitPrice = CASE id ");
 
         // 为每条记录构建 WHEN ... THEN ...