feat(approval): 添加审批撤销功能

- 在IWmsApprovalService中新增cancelApproval方法定义
- 在IWmsApprovalTaskService中新增deleteByApprovalId方法定义
- 在WmsApprovalController中新增cancelApproval接口
- 在WmsApprovalServiceImpl中实现撤销审批业务逻辑
- 在WmsApprovalTaskServiceImpl中实现按审批ID删除任务功能
- 添加撤销审批的权限验证和重复提交限制
- 实现审批状态校验和关联任务清理机制

klp-wms/src/main/java/com/klp/service/impl/WmsApprovalTaskServiceImpl.java

@@ -201,4 +201,10 @@ public class WmsApprovalTaskServiceImpl implements IWmsApprovalTaskService {
             .eq(WmsApprovalTask::getApprovalId, approvalId)
             .orderByAsc(WmsApprovalTask::getCreateTime));
     }
+
+    @Override
+    public Integer deleteByApprovalId(Long approvalId) {
+        return baseMapper.delete(Wrappers.<WmsApprovalTask>lambdaQuery()
+            .eq(WmsApprovalTask::getApprovalId, approvalId));
+    }
 }