[9.1] Add tags for the query so the search is scoped within the test (#236706) (#238443)

# Backport

This will backport the following commits from `main` to `9.1`:
- [Add tags for the query so the search is scoped within the test
(#236706)](#236706)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Faisal
Kanout","email":"faisal.kanout@elastic.co"},"sourceCommit":{"committedDate":"2025-10-10T12:38:57Z","message":"Add
tags for the query so the search is scoped within the test
(#236706)\n\n## Summary\n\nIt fixes #231522 by adding tags to the SLO
query and narrowing down the\nselection to match only the SLO created
within the test. That avoids any\npotential interference with other
tests OR the racing conditions (the\nflakiness is unreproducible
locally).","sha":"02e7114e303492135b4967f5033a5c5e33f7dd5d","branchLabelMapping":{"^v9.3.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","backport:all-open","Feature:SLO","Team:obs-ux-management","author:obs-ux-management","v9.2.0","v9.3.0"],"title":"Add
tags for the query so the search is scoped within the
test","number":236706,"url":"https://github.com/elastic/kibana/pull/236706","mergeCommit":{"message":"Add
tags for the query so the search is scoped within the test
(#236706)\n\n## Summary\n\nIt fixes #231522 by adding tags to the SLO
query and narrowing down the\nselection to match only the SLO created
within the test. That avoids any\npotential interference with other
tests OR the racing conditions (the\nflakiness is unreproducible
locally).","sha":"02e7114e303492135b4967f5033a5c5e33f7dd5d"}},"sourceBranch":"main","suggestedTargetBranches":["9.2"],"targetPullRequestStates":[{"branch":"9.2","label":"v9.2.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v9.3.0","branchLabelMappingKey":"^v9.3.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/236706","number":236706,"mergeCommit":{"message":"Add
tags for the query so the search is scoped within the test
(#236706)\n\n## Summary\n\nIt fixes #231522 by adding tags to the SLO
query and narrowing down the\nselection to match only the SLO created
within the test. That avoids any\npotential interference with other
tests OR the racing conditions (the\nflakiness is unreproducible
locally).","sha":"02e7114e303492135b4967f5033a5c5e33f7dd5d"}}]}]
BACKPORT-->

Co-authored-by: Faisal Kanout <faisal.kanout@elastic.co>

Author: kibanamachine

x-pack/solutions/observability/test/api_integration_deployment_agnostic/apis/slo/find_slo.ts

@@ -52,9 +52,16 @@ export default function ({ getService }: DeploymentAgnosticFtrProviderContext) {
     });
 
     it('searches SLOs using kqlQuery', async () => {
-      const createResponse1 = await sloApi.create(DEFAULT_SLO, adminRoleAuthc);
+      const testTag = `test-${Date.now()}`;
+      const createResponse1 = await sloApi.create(
+        Object.assign({}, DEFAULT_SLO, { tags: ['test', testTag] }),
+        adminRoleAuthc
+      );
       const createResponse2 = await sloApi.create(
-        Object.assign({}, DEFAULT_SLO, { name: 'something irrelevant foo' }),
+        Object.assign({}, DEFAULT_SLO, {
+          name: 'something irrelevant foo',
+          tags: ['test', testTag],
+        }),
         adminRoleAuthc
       );
 
@@ -65,7 +72,7 @@ export default function ({ getService }: DeploymentAgnosticFtrProviderContext) {
       await retry.tryForTime(180 * 1000, async () => {
         let response = await supertestWithoutAuth
           .get(`/api/observability/slos`)
-          .query({ page: 1, perPage: 333 })
+          .query({ page: 1, perPage: 333, kqlQuery: `slo.tags:"${testTag}"` })
           .set(adminRoleAuthc.apiKeyHeader)
           .set(internalHeaders)
           .send();