Archive create_work_items_index migration

ee/app/models/concerns/search/elastic/epics_search.rb

ee/app/models/concerns/search/elastic/issues_search.rb

ee/app/models/ee/work_item.rb

...ces/search/elastic/delete/project_associations_service.rb

ee/app/services/search/rake_task_executor_service.rb

...rkers/search/elastic_group_association_deletion_worker.rb

ee/elastic/docs/20240501134252_create_work_items_index.yml

ee/elastic/migrate/20240501134252_create_work_items_index.rb

ee/lib/search/elastic/references/work_item.rb

...ic/migrate/20240501134252_create_work_items_index_spec.rb

ee/spec/elastic_integration/epic_index_spec.rb

ee/spec/lib/search/elastic/references/work_item_spec.rb

ee/spec/models/concerns/search/elastic/issues_search_spec.rb

ee/spec/models/epic_spec.rb

ee/spec/models/work_item_spec.rb

...earch/elastic/delete/project_associations_service_spec.rb

ee/spec/services/search/rake_task_executor_service_spec.rb

.../search/elastic_group_association_deletion_worker_spec.rb