[7.x] [Lens] Build endzone markers (#97849)

[kibanamachine]

Backports the following commits to 7.x:

• [Lens] Build endzone markers ([Lens] Build endzone markers #97849)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 221e532
• Storybooks Preview

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
lens	495	496	+1

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
lens	149	150	+1

Async chunks

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

id	before	after	diff
lens	965.1KB	968.2KB	+3.1KB

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
lens	35.0KB	35.3KB	+233.0B

Unknown metric groups

API count

id	before	after	diff
lens	160	161	+1

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

cc @flash1293