feat(airflow): Throttle ES health alerts to prevent fatigue

[SinghCod3r]

Implements a throttling mechanism for the Elasticsearch cluster health check DAG using an Airflow Variable.

• When the cluster first fails, an alert is sent and an 'in-alarm' variable is set with a timestamp.
• Subsequent failures will not trigger alerts until 6 hours have passed.
• When the cluster health is restored, the 'in-alarm' variable is cleared.

This prevents the alert channel from being flooded during an extended outage, reducing alert fatigue for maintainers.

Fixes #4638

Fixes

Fixes #[issue number] by @[issue author]

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• My pull request has a descriptive title (not a vague title likeUpdate index.md).
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  for the catalog or ov just api/generate-docs for the API) where applicable.

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[SinghCod3r]

@krysal,i need your help in reviewing this as i don't get why the lint files are getting error.. even though i corrected prettier..