[8.16] [Entity Store] [FTR Tests] Fix flakiness + poll for engine started on setup (#196564) #28952

	---
	##
	## This the automation to let Observability team members to know what are the
	## supported GitHub commands to interact with the Observability test environments.
	##
	## Owner: @elastic/observablt-robots
	##
	name: oblt-github-commands

	on:
	pull_request_target:
	types:
	- labeled

	permissions:
	contents: read

	jobs:
	comment:
	if: ${{ github.event.label.name == 'ci:project-deploy-observability' }}
	runs-on: ubuntu-latest
	permissions:
	issues: write
	pull-requests: write
	steps:
	- uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
	with:
	script: \|
	const body = `
	### :robot: GitHub comments

	<details><summary>Expand to view the GitHub comments</summary>
	<p>

	Just comment with:
	- \`/oblt-deploy\` : Deploy a Kibana instance using the Observability test environments.
	- \`run\` \`docs-build\` : Re-trigger the docs validation. (use unformatted text in the comment!)
	</p>
	</details>
	`.replace(/ +/g, '')
	github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: body
	})

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