[8.16] Updates docs about excluding cold and frozen data from rule executions

[nastasha-solomon]

Fixes #5925 and https://github.com/elastic/security-docs-internal/issues/47 by updating the explanation for filtering out cold and frozen documents during rule executions.

Previews:

• Exclude cold and frozen data from rule executions
• Detections and alerts | Limited support for indicator match rules
• Configure advanced settings | Exclude cold and frozen data from rule executions

[github-actions]

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