[Obs SLO] Confirm new CDN is working in the observability SLO pages

[jasonrhodes]

Kibana core team is ready for us to do some initial testing on the Kibana serverless CDN.

Acceptance Criteria

• Follow the steps in this Google Doc (copied from @jloleysens email) re: setting up a QA project
• Do manual QA in the project for the observability SLO pages
  • Keep your network tab open to ensure asset loading and JS initiated requests work as expected
  • If you have JS code in the browser that is calling domains other than origin or *.elastic.co please reach out to us, your requests will be blocked!
• Document any problems or concerns in this issue and then report them to the Kibana core team (in the #kibana-core Slack channel was the recommended way)

Timebox: 1-2 hours
Due Date: 22 March

[elasticmachine]

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

[simianhacker]

The only issue I see is this:

Which seems unrelated to the CDN.

[jasonrhodes]

I think that's related to the "If you have JS code in the browser that is calling domains other than origin or *.elastic.co please reach out to us, your requests will be blocked!" warning, and probably means our RUM requests are failing. I'll check with folks who know more about RUM to confirm.

[jasonrhodes]

It's been solved already: #178391 (comment)