In #55012 we decided to remove any API that could allow to access/query savedObjects from core setup contract, and move them to the start contract instead.

#55396 plans to do the same thing regarding UiSettings.

Steps:

• Expose Elasticsearch from start and deprecate setup API's Expose Elasticsearch from start and deprecate from setup #59886
• add legacy prefix for API exposed from setup Deprecate es API exposed from setup contract #67596
• Move context.elasticsearch.adminClient/dataClient -> context.elasticsearch.legacy.client Mark elasticsearch client exposed via request context as deprecated #67319
• Refactor Core API (SavedObjectsService, RequestContext, etc.) to use Elasticsearch start API's Populate RequestHandlerContext with start API only  #67579
• Refactor plugins to use Elasticsearch start API's Refactor Plugins to access elasticsearch from CoreStart #59915
• Refactor plugins to create custom Elasticsearch clients from start API's
  Use ES API from start contract #66157