feat: New confirmation modal when deleting library components (#1906)

* feat: New units message on delete confirm modal when deleting components
* test: Tests for new delete confirmation messages
* refactor: useComponentsFromSearchIndex added
* refactor: Move fetch units to ComponentDeleter
* style: Delete unnecessary code

src/search-manager/data/api.ts

@@ -142,6 +142,7 @@ export interface ContentHit extends BaseContentHit {
   content?: ContentDetails;
   lastPublished: number | null;
   collections: { displayName?: string[], key?: string[] };
+  units: { displayName?: string[], key?: string[] };
   published?: ContentPublishedData;
   publishStatus: PublishStatus;
   formatted: BaseContentHit['formatted'] & { published?: ContentPublishedData, };