Filter out error docs from standalone cluster lists

[matschaffer]

Summary

Ensures error docs won't lead to erroneous "Standalone cluster" entries.

Fixes elastic/integrations#4011

Requires #137904 and elastic/integrations#4147 to test functionality.

Keeping as draft until those are merged so we can test properly. All merged, just make sure you have main kibana & packages.

Testing

(Details WIP)

• Set up elastic-package stack with a logstash profile
• Make sure that profile has a bad hostname (to make sure you get error docs)
• Ensure no "Standalone Cluster" is present in Stack Monitoring UI

[klacabane]

@matschaffer this is the right fix but we also need the error.message field mapped. I'll send a PR

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)

[matschaffer]

@elasticmachine merge upstream

[matschaffer]

Marking this ready for review, but admittedly the testing story is pretty thin. I'll try to work on a cleaner flow today.

In the mean time I'm pretty sure @klacabane and @crespocarlos have a sufficient level of elastic-package tribal knowledge to know to validate the change.

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 2bd4309

Metrics [docs]

✅ unchanged

History

• 💛 Build #69922 was flaky 0da677b
• 💚 Build #69887 succeeded 9ecbd2e
• 💚 Build #69721 succeeded 4d90cf8

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @matschaffer