[BUG] <HertzBeat v1.3.1 threshold rule function is very good, but it is still recommended to add the alarm function after recovery>

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

当一个监控项中断时间较长，按照现有的监控规则，会每隔一段时间，可能是6分钟或者8分钟，就会报警一次，直至该监控恢复，这样就会导致频繁产生垃圾告警通知行为

### Expected Behavior

建议告警后，仅发一次，后续仍有告警的话，忽略，直至恢复再发一次告警。

### Steps To Reproduce
每产生一个告警，判断一下上次的状态，如果已经发过告警了，就不发了，直至恢复

_No response_

### Environment

```markdown
v1.3.1
```

### Debug logs

·

### Anything else?

·

No files, tests, or entry points are named. Start by locating the monitoring alert state and notification flow; done means an ongoing incident sends one alert, suppresses repeats, and sends one notification after recovery.

Written by the indexing model from the issue text.