更新2.2.2版本后，原来的HeartBeatEvent无法触发

[linzhiqiang0514]

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Which Component
eg. Nacos Discovery, Sentinel
Discovery组件

Describe what problem you have encountered
A clear and concise description of what you want to do.
NacosWatch更新后，去除了TaskScheduler，原来基于HeartBeatEventListener的事件，都无法触发

/**
     * nacos事件监听
     *
     * @param heartbeatEvent
     */
    @EventListener(classes = HeartbeatEvent.class)
    public void listenEvent(ApplicationEvent heartbeatEvent) {
        // 没有启动完毕先等待
        if (!isStartupCompleted) {
            lock.lock();
            try {
                condition.await();
            } catch (InterruptedException e) {
                log.error("condition.await() error", e);
            } finally {
                lock.unlock();
            }
        }
        registryListener.onEvent(heartbeatEvent);
    }

Describe what information you have read
eg. I have read the reference doc of Sentinel