[Security Solution] Add content to the new Data Ingestion Hub header

[agusruidiazgd]

Summary

Align the header styles with the latest design:

Checklist

Delete any items that are not applicable to this PR.

• Unit or functional tests were updated or added to match the most common scenarios

[elasticmachine]

Pinging @elastic/security-threat-hunting-explore (Team:Threat Hunting:Explore)

[angorayc]

Hey @agusruidiazgd , thanks for updating the header. I checked the view when feature flag was off and found some styling issues, can you please check again?

[angorayc]

A minor styling issue found: #189969 (comment)

[agusruidiazgd]

@angorayc this is how it looks now 😃

• feature flag disabled:

• feature flag enabled:

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 071da9a
• Cloud Deployment

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
securitySolution	5610	5613	+3

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
securitySolution	20.5MB	20.5MB	+2.3KB

Unknown metric groups

miscellaneous assets size

id	before	after	diff
securitySolution	6.3MB	6.3MB	+51.0KB

History

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

cc @agusruidiazgd

[angorayc]

Thanks for the fix, LGTM!