[9.1] [SharedUX][A11y] Announce log rate analysis info popover (#234722) (#234862)

# Backport

This will backport the following commits from `main` to `9.1`:
- [[SharedUX][A11y] Announce log rate analysis info popover
(#234722)](#234722)

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

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

<!--BACKPORT [{"author":{"name":"Ángeles Martínez
Barrio","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-09-12T07:58:14Z","message":"[SharedUX][A11y]
Announce log rate analysis info popover (#234722)\n\nCloses
https://github.com/elastic/kibana/issues/216005\n\n## Summary\n\nAdded
`aria-labelledby` attribute to the popover associated to the\nrelevant
popover title.\n\n## Testing\n**- Safari:**\nBefore
announcement:\n\n<img width=\"980\" height=\"698\" alt=\"Screenshot
2025-09-11 at 10 57
42\"\nsrc=\"https://github.com/user-attachments/assets/35f162e0-7af0-44c8-a963-35dfe4327915\"\n/>\n\nAfter
announcement:\n\n<img width=\"959\" height=\"727\" alt=\"Screenshot
2025-09-11 at 10 20
05\"\nsrc=\"https://github.com/user-attachments/assets/097596cd-f683-492d-9035-cb6f12fe8467\"\n/>\n\n**-
Chrome:**\nBefore a11y tree:\n\n<img width=\"2351\" height=\"663\"
alt=\"Screenshot 2025-09-11 at 10 54
02\"\nsrc=\"https://github.com/user-attachments/assets/4e6c0af6-e24b-417f-a809-6df6f959e4dd\"\n/>\n\nAfter
a11y tree:\n\n<img width=\"2396\" height=\"633\" alt=\"Screenshot
2025-09-11 at 10 52
51\"\nsrc=\"https://github.com/user-attachments/assets/955219d5-4ea7-41bc-972d-2614c1c57c30\"\n/>\n\n\nSee\n[discussion](https://elastic.slack.com/archives/C04UK0RDL2J/p1744641509849679?thread_ts=1744637550.194309&cid=C04UK0RDL2J)\non
why `role=\"dialog\"` and `aria-labelledby`cannot be tested
on\nChrome+VO.","sha":"3ccef6399038da8ff1cf05e9199c01ed690590c7","branchLabelMapping":{"^v9.2.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Project:Accessibility","release_note:skip","Team:SharedUX","backport:prev-minor","v9.2.0"],"title":"[SharedUX][A11y]
Announce log rate analysis info
popover","number":234722,"url":"https://github.com/elastic/kibana/pull/234722","mergeCommit":{"message":"[SharedUX][A11y]
Announce log rate analysis info popover (#234722)\n\nCloses
https://github.com/elastic/kibana/issues/216005\n\n## Summary\n\nAdded
`aria-labelledby` attribute to the popover associated to the\nrelevant
popover title.\n\n## Testing\n**- Safari:**\nBefore
announcement:\n\n<img width=\"980\" height=\"698\" alt=\"Screenshot
2025-09-11 at 10 57
42\"\nsrc=\"https://github.com/user-attachments/assets/35f162e0-7af0-44c8-a963-35dfe4327915\"\n/>\n\nAfter
announcement:\n\n<img width=\"959\" height=\"727\" alt=\"Screenshot
2025-09-11 at 10 20
05\"\nsrc=\"https://github.com/user-attachments/assets/097596cd-f683-492d-9035-cb6f12fe8467\"\n/>\n\n**-
Chrome:**\nBefore a11y tree:\n\n<img width=\"2351\" height=\"663\"
alt=\"Screenshot 2025-09-11 at 10 54
02\"\nsrc=\"https://github.com/user-attachments/assets/4e6c0af6-e24b-417f-a809-6df6f959e4dd\"\n/>\n\nAfter
a11y tree:\n\n<img width=\"2396\" height=\"633\" alt=\"Screenshot
2025-09-11 at 10 52
51\"\nsrc=\"https://github.com/user-attachments/assets/955219d5-4ea7-41bc-972d-2614c1c57c30\"\n/>\n\n\nSee\n[discussion](https://elastic.slack.com/archives/C04UK0RDL2J/p1744641509849679?thread_ts=1744637550.194309&cid=C04UK0RDL2J)\non
why `role=\"dialog\"` and `aria-labelledby`cannot be tested
on\nChrome+VO.","sha":"3ccef6399038da8ff1cf05e9199c01ed690590c7"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.2.0","branchLabelMappingKey":"^v9.2.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/234722","number":234722,"mergeCommit":{"message":"[SharedUX][A11y]
Announce log rate analysis info popover (#234722)\n\nCloses
https://github.com/elastic/kibana/issues/216005\n\n## Summary\n\nAdded
`aria-labelledby` attribute to the popover associated to the\nrelevant
popover title.\n\n## Testing\n**- Safari:**\nBefore
announcement:\n\n<img width=\"980\" height=\"698\" alt=\"Screenshot
2025-09-11 at 10 57
42\"\nsrc=\"https://github.com/user-attachments/assets/35f162e0-7af0-44c8-a963-35dfe4327915\"\n/>\n\nAfter
announcement:\n\n<img width=\"959\" height=\"727\" alt=\"Screenshot
2025-09-11 at 10 20
05\"\nsrc=\"https://github.com/user-attachments/assets/097596cd-f683-492d-9035-cb6f12fe8467\"\n/>\n\n**-
Chrome:**\nBefore a11y tree:\n\n<img width=\"2351\" height=\"663\"
alt=\"Screenshot 2025-09-11 at 10 54
02\"\nsrc=\"https://github.com/user-attachments/assets/4e6c0af6-e24b-417f-a809-6df6f959e4dd\"\n/>\n\nAfter
a11y tree:\n\n<img width=\"2396\" height=\"633\" alt=\"Screenshot
2025-09-11 at 10 52
51\"\nsrc=\"https://github.com/user-attachments/assets/955219d5-4ea7-41bc-972d-2614c1c57c30\"\n/>\n\n\nSee\n[discussion](https://elastic.slack.com/archives/C04UK0RDL2J/p1744641509849679?thread_ts=1744637550.194309&cid=C04UK0RDL2J)\non
why `role=\"dialog\"` and `aria-labelledby`cannot be tested
on\nChrome+VO.","sha":"3ccef6399038da8ff1cf05e9199c01ed690590c7"}}]}]
BACKPORT-->

Co-authored-by: Ángeles Martínez Barrio <[email protected]>

Author: kibanamachine

x-pack/platform/plugins/shared/aiops/public/components/log_rate_analysis/log_rate_analysis_info_popover.tsx

@@ -7,7 +7,14 @@
 
 import React, { useState, type FC } from 'react';
 
-import { useEuiTheme, EuiBadge, EuiPopover, EuiPopoverTitle, EuiText } from '@elastic/eui';
+import {
+  useEuiTheme,
+  EuiBadge,
+  EuiPopover,
+  EuiPopoverTitle,
+  EuiText,
+  htmlIdGenerator,
+} from '@elastic/eui';
 
 import { LOG_RATE_ANALYSIS_TYPE } from '@kbn/aiops-log-rate-analysis';
 import { useAppSelector } from '@kbn/aiops-log-rate-analysis/state';
@@ -48,6 +55,7 @@ export const LogRateAnalysisInfoPopover: FC = () => {
 
   const [isPopoverOpen, setIsPopoverOpen] = useState(false);
 
+  const popoverTitleId = htmlIdGenerator()('logRateAnalysisInfoPopoverTitle');
   const infoTitlePrefix = i18n.translate('xpack.aiops.analysis.analysisTypeInfoTitlePrefix', {
     defaultMessage: 'Analysis type: ',
   });
@@ -107,9 +115,10 @@ export const LogRateAnalysisInfoPopover: FC = () => {
       isOpen={isPopoverOpen}
       ownFocus
       panelPaddingSize="m"
+      aria-labelledby={popoverTitleId}
     >
       {infoTitle && (
-        <EuiPopoverTitle>
+        <EuiPopoverTitle id={popoverTitleId}>
           {infoTitlePrefix}
           {infoTitle}
         </EuiPopoverTitle>