fix(oa): 删除项目计划时级联删除阶段数据

- 在删除项目计划时，先删除关联的项目阶段数据
- 添加事务注解确保删除操作的原子性

ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/domain/ErpProjectPlan.java

@@ -83,13 +83,10 @@ public class ErpProjectPlan extends TenantEntity {
     @TableLogic
     private String delFlag;
 
-
     /**
      * 创建者名称
      */
     @TableField(exist = false )
     private String createName;
 
-
-
 }

ruoyi-modules/ruoyi-oa/src/main/java/org/dromara/oa/erp/service/impl/ErpProjectPlanServiceImpl.java

@@ -278,11 +278,14 @@ public class ErpProjectPlanServiceImpl implements IErpProjectPlanService {
      * @return 是否删除成功
      */
     @Override
+    @Transactional(rollbackFor = Exception.class)
     public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
         if(isValid){
             //TODO 做一些业务上的校验,判断是否需要校验
         }
-        return baseMapper.deleteByIds(ids) > 0;
+        // 先删除子表
+        int delete = planStageMapper.delete(Wrappers.<ErpProjectPlanStage>lambdaQuery().in(ErpProjectPlanStage::getProjectPlanId, ids));
+        return baseMapper.deleteByIds(ids)  > 0;
     }
 
     /**