[7.x] [Fleet] Register Sample Data (#113200)

[kibanamachine]

Backports the following commits to 7.x:

• [Fleet] Register Sample Data ([Fleet] Register Sample Data #113200)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: e0e8041
• Storybooks Preview

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
customIntegrations	66	69	+3

Async chunks

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

id	before	after	diff
fleet	597.8KB	597.8KB	+36.0B

Unknown metric groups

API count

id	before	after	diff
customIntegrations	66	69	+3

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

cc @thomasneirynck