[8.19] [Obs AI Assistant] replace EuiErrorBoundary with KibanaErrorBoundary (#229710) (#229856)

# Backport

This will backport the following commits from `main` to `8.19`:
- [[Obs AI Assistant] replace EuiErrorBoundary with KibanaErrorBoundary
(#229710)](#229710)

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

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

<!--BACKPORT [{"author":{"name":"Sandra
G","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-07-29T17:21:18Z","message":"[Obs
AI Assistant] replace EuiErrorBoundary with KibanaErrorBoundary
(#229710)\n\nReplaces `EuiErrorBoundary` with using
`core.rendering.addContext()`.\n\n\nhttps://github.com/elastic/kibana/blob/main/src/core/packages/rendering/browser/README.mdx\n\nI
tested this by throwing an error in the feedback buttons and the
AI\nAssistant button itself and confirmed they are caught by
the\n`KibanaErrorBoundary`.\n\n---------\n\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"d73f9eef6031eb4ee7f3d1d99935eaa8c98dc522","branchLabelMapping":{"^v9.2.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:fix","backport:all-open","ci:project-deploy-observability","v9.2.0"],"title":"[Obs
AI Assistant] replace EuiErrorBoundary with
KibanaErrorBoundary","number":229710,"url":"https://github.com/elastic/kibana/pull/229710","mergeCommit":{"message":"[Obs
AI Assistant] replace EuiErrorBoundary with KibanaErrorBoundary
(#229710)\n\nReplaces `EuiErrorBoundary` with using
`core.rendering.addContext()`.\n\n\nhttps://github.com/elastic/kibana/blob/main/src/core/packages/rendering/browser/README.mdx\n\nI
tested this by throwing an error in the feedback buttons and the
AI\nAssistant button itself and confirmed they are caught by
the\n`KibanaErrorBoundary`.\n\n---------\n\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"d73f9eef6031eb4ee7f3d1d99935eaa8c98dc522"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.2.0","branchLabelMappingKey":"^v9.2.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/229710","number":229710,"mergeCommit":{"message":"[Obs
AI Assistant] replace EuiErrorBoundary with KibanaErrorBoundary
(#229710)\n\nReplaces `EuiErrorBoundary` with using
`core.rendering.addContext()`.\n\n\nhttps://github.com/elastic/kibana/blob/main/src/core/packages/rendering/browser/README.mdx\n\nI
tested this by throwing an error in the feedback buttons and the
AI\nAssistant button itself and confirmed they are caught by
the\n`KibanaErrorBoundary`.\n\n---------\n\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"d73f9eef6031eb4ee7f3d1d99935eaa8c98dc522"}}]}]
BACKPORT-->

Co-authored-by: Sandra G <[email protected]>

Author: kibanamachine

x-pack/solutions/observability/plugins/observability_ai_assistant_app/public/utils/shared_providers.tsx

@@ -4,7 +4,6 @@
  * 2.0; you may not use this file except in compliance with the Elastic License
  * 2.0.
  */
-import { EuiErrorBoundary } from '@elastic/eui';
 import type { CoreStart, CoreTheme } from '@kbn/core/public';
 import { KibanaContextProvider } from '@kbn/kibana-react-plugin/public';
 import { KibanaThemeProvider } from '@kbn/react-kibana-context-theme';
@@ -31,23 +30,21 @@ export function SharedProviders({
     return { theme$ };
   }, [theme$]);
 
-  return (
-    <EuiErrorBoundary>
-      <KibanaThemeProvider theme={theme}>
-        <KibanaContextProvider
-          services={{
-            ...coreStart,
-            ...pluginsStart,
-            plugins: {
-              start: pluginsStart,
-            },
-          }}
-        >
-          <RedirectAppLinks coreStart={coreStart}>
-            <coreStart.i18n.Context>{children}</coreStart.i18n.Context>
-          </RedirectAppLinks>
-        </KibanaContextProvider>
-      </KibanaThemeProvider>
-    </EuiErrorBoundary>
+  return coreStart.rendering.addContext(
+    <KibanaThemeProvider theme={theme}>
+      <KibanaContextProvider
+        services={{
+          ...coreStart,
+          ...pluginsStart,
+          plugins: {
+            start: pluginsStart,
+          },
+        }}
+      >
+        <RedirectAppLinks coreStart={coreStart}>
+          <coreStart.i18n.Context>{children}</coreStart.i18n.Context>
+        </RedirectAppLinks>
+      </KibanaContextProvider>
+    </KibanaThemeProvider>
   );
 }