apidocs: fix isEnabled check for repo name + language upsertion

Created by: Strum355

(Probably) fixes Upload failed to complete: Store.WriteDocumentationPages: WriteDocumentationSearch: replaceSearchRecords: committing staged search records: ERROR: insert or update on table "lsif_data_docs_search_public" violates foreign key constraint "lsif_data_docs_search_public_lang_name_id_fk" (SQLSTATE 23503)