[8.x] [APM] Fix stack trace syntax highlight (#205187) (#205273)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[APM] Fix stack trace syntax highlight
(#205187)](#205187)

<!--- Backport version: 9.4.3 -->

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

<!--BACKPORT [{"author":{"name":"Carlos
Crespo","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-12-30T15:48:38Z","message":"[APM]
Fix stack trace syntax highlight (#205187)\n\nfixes:
[#204957](https://github.com/elastic/kibana/issues/204957)\r\n\r\n##
Summary\r\n\r\nThis PR fixes the stack trace syntax
highlight\r\n\r\n<img width=\"1452\"
alt=\"image\"\r\nsrc=\"https://github.com/user-attachments/assets/ee076fc6-c901-4e8f-a760-8c85a5470a26\"\r\n/>\r\n\r\n---------\r\n\r\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"a78f61691f6de231b76083a52bdcb3db602df1a0","branchLabelMapping":{"^v9.0.0$":"main","^v8.18.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","backport:prev-major","Team:obs-ux-infra_services"],"title":"[APM]
Fix stack trace syntax
highlight","number":205187,"url":"https://github.com/elastic/kibana/pull/205187","mergeCommit":{"message":"[APM]
Fix stack trace syntax highlight (#205187)\n\nfixes:
[#204957](https://github.com/elastic/kibana/issues/204957)\r\n\r\n##
Summary\r\n\r\nThis PR fixes the stack trace syntax
highlight\r\n\r\n<img width=\"1452\"
alt=\"image\"\r\nsrc=\"https://github.com/user-attachments/assets/ee076fc6-c901-4e8f-a760-8c85a5470a26\"\r\n/>\r\n\r\n---------\r\n\r\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"a78f61691f6de231b76083a52bdcb3db602df1a0"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/205187","number":205187,"mergeCommit":{"message":"[APM]
Fix stack trace syntax highlight (#205187)\n\nfixes:
[#204957](https://github.com/elastic/kibana/issues/204957)\r\n\r\n##
Summary\r\n\r\nThis PR fixes the stack trace syntax
highlight\r\n\r\n<img width=\"1452\"
alt=\"image\"\r\nsrc=\"https://github.com/user-attachments/assets/ee076fc6-c901-4e8f-a760-8c85a5470a26\"\r\n/>\r\n\r\n---------\r\n\r\nCo-authored-by:
kibanamachine
<[email protected]>","sha":"a78f61691f6de231b76083a52bdcb3db602df1a0"}}]}]
BACKPORT-->

Co-authored-by: Carlos Crespo <[email protected]>

x-pack/solutions/observability/plugins/apm/server/routes/errors/get_error_groups/get_error_sample_details.ts

@@ -28,6 +28,7 @@ import {
   TRANSACTION_ID,
   ERROR_STACK_TRACE,
   SPAN_ID,
+  SERVICE_LANGUAGE_NAME,
 } from '../../../../common/es_fields/apm';
 import { environmentQuery } from '../../../../common/utils/environment_query';
 import { ApmDocumentType } from '../../../../common/document_type';
@@ -83,6 +84,7 @@ export async function getErrorSampleDetails({
     SPAN_ID,
     AGENT_VERSION,
     PROCESSOR_NAME,
+    SERVICE_LANGUAGE_NAME,
     ERROR_CULPRIT,
     ERROR_STACK_TRACE,
     ERROR_EXC_MESSAGE,

x-pack/test/api_integration/deployment_agnostic/apis/observability/apm/mobile/errors/generate_data.ts

@@ -33,6 +33,9 @@ export async function generateData({
 }) {
   const serviceGoProdInstance = apm
     .service({ name: serviceName, environment: 'production', agentName: 'swift' })
+    .defaults({
+      'service.language.name': 'swift',
+    })
     .instance('instance-a');
 
   const interval = '1m';

x-pack/test/api_integration/deployment_agnostic/apis/observability/apm/mobile/errors/group_id_samples.spec.ts

@@ -138,6 +138,10 @@ export default function ApiTest({ getService }: DeploymentAgnosticFtrProviderCon
           it('displays correct error culprit info', () => {
             expect(errorSampleDetailsResponse.error.error.culprit).to.equal('Error culprit 1');
           });
+
+          it('displays correct language name', () => {
+            expect(errorSampleDetailsResponse.error.service.language?.name).to.equal('swift');
+          });
         });
       });