[8.15] [Request][8.15 & Serverless] Alert suppression for ES|QL and ML rules (backport #5568)

[mergify]

Fixes #5516 and #5517

ESS previews

• Alert suppression for ES|QL rules:
  • Create an ES|QL rule: Added an optional step for configuring alert suppression
  • ES|QL query design considerations: Added a bullet about configuring suppression on non-aggregating queries
• Alert suppression for ML rules:
  • Create a machine learning rule: Added an optional step for configuring alert suppression.
• Main docs for alert suppression: Minor updates to show that alert suppression is supported for ES|QL and ML rules
• API docs
  • Create rule
  • Update rule

Serverless preview
(Same updates as ESS docs, minus API doc updates)

• Alert suppression for ES|QL rules:
  • Create an ES|QL rule
  • ES|QL query design considerations
• Alert suppression for ML rules
• Main docs for alert suppression

---

This is an automatic backport of pull request #5568 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 506ad4d has failed:

On branch mergify/bp/8.15/pr-5568
Your branch is up to date with 'origin/8.15'.

You are currently cherry-picking commit 506ad4da.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   docs/detections/alert-suppression.asciidoc
	modified:   docs/detections/api/rules/rules-api-create.asciidoc
	modified:   docs/detections/api/rules/rules-api-update.asciidoc
	modified:   docs/detections/rules-ui-create.asciidoc

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   docs/serverless/alerts/alert-suppression.mdx
	deleted by us:   docs/serverless/rules/rules-ui-create.mdx

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[github-actions]

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