[8.x] [embeddable] remove setCustomEmbeddableFactoryProvider from setup API (#203853)

[kibanamachine]

Backport

This will backport the following commits from main to 8.x:

• [embeddable] remove setCustomEmbeddableFactoryProvider from setup API (#203853)

Questions ?

Please refer to the Backport tool documentation

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: a67e896

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
embeddableEnhanced	46	44	-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
embeddable	457	455	-2
embeddableEnhanced	19	15	-4
total			-6

Public APIs missing exports

Total count of every type that is part of your API that should be exported but is not. This will cause broken links in the API documentation system. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats exports for more detailed information.

id	before	after	diff
embeddable	9	8	-1

Page load bundle

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

id	before	after	diff
embeddable	67.6KB	67.2KB	-419.0B
embeddableEnhanced	9.0KB	7.2KB	-1.8KB
total			-2.2KB

Unknown metric groups

API count

id	before	after	diff
embeddable	562	560	-2
embeddableEnhanced	19	15	-4
total			-6

ESLint disabled line counts

id	before	after	diff
embeddableEnhanced	2	1	-1

References to deprecated APIs

id	before	after	diff
embeddableEnhanced	4	0	-4

Total ESLint disabled count

id	before	after	diff
embeddableEnhanced	4	3	-1

Unreferenced deprecated APIs

id	before	after	diff
embeddable	3	4	+1
embeddableEnhanced	1	0	-1
total			-0

cc @nreese