[APM] Error details missing language syntax highlight

[crespocarlos]

Summary

The exception stack trace component is not rendering the stack trace with the appropriate syntax highlight

This is how it should render

The get_error_sample_details is not returning the service.language.name, necessary for the syntax highlight to work

AC

• The stack trace component should render with syntax highlight

[elasticmachine]

Pinging @elastic/obs-ux-infra_services-team (Team:obs-ux-infra_services)