[7.x] [Maps] Auto generate legends and styles from mvt data (#94811)

[thomasneirynck]

Backports the following commits to 7.x:

• [Maps] Auto generate legends and styles from mvt data ([Maps] Auto generate legends and styles from mvt data #94811)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: f08cb60
• Storybooks Preview

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
maps	740	742	+2

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
maps	200	203	+3

Async chunks

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

id	before	after	diff
maps	3.1MB	3.1MB	+6.3KB

Page load bundle

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

id	before	after	diff
maps	64.6KB	65.0KB	+457.0B

Unknown metric groups

API count

id	before	after	diff
maps	201	204	+3

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@elasticmachine merge upstream