feat(notify): 待办/抄送消息补 jumpApp 页面归属（B0 直批配套补提交）——bizUrl 落地页场景 jumpApp=instance.bizType（接收方按它查基址），未传 bizUrl 回落办理页留空按 bizType；UserMsgClient.sendUserMsg 增 jumpApp 形参；CallbackPushService/ConditionRouteService 跟随 B 系列回调前缀改造；测试补 jumpApp 断言

src/main/java/com/yunhai/flowcenter/callback/CallbackPushService.java

@@ -152,7 +152,7 @@ public class CallbackPushService {
                             + " 推送连续失败 " + callbackLog.getRetryCount() + " 次，已转入持续重试（封顶 "
                             + capMinutes + " 分钟/次）。消费方恢复后将自动追平，无需人工干预；"
                             + "如确认该事件已无意义，请在管理端标记死信。最近错误：" + truncate(error),
-                    null, "hang:" + callbackLog.getEventId(), null);
+                    null, null, "hang:" + callbackLog.getEventId(), null);
         } catch (Exception e) {
             log.warn("[flow-center] 挂起告警发送失败：eventId={} {}", callbackLog.getEventId(), e.toString());
         }
@@ -197,7 +197,7 @@ public class CallbackPushService {
                     "回调推送死信告警",
                     "办件 " + callbackLog.getInstanceId() + " 事件 " + callbackLog.getEvent()
                             + " 推送失败进入死信：" + error,
-                    null, "dead:" + callbackLog.getEventId(), null);
+                    null, null, "dead:" + callbackLog.getEventId(), null);
         } catch (Exception e) {
             log.warn("[flow-center] 死信告警发送失败：eventId={} {}", callbackLog.getEventId(), e.toString());
         }