- In a previous MR, we identified a N+1 issue
  when requesting the data to display the label "protected"
  in the package overview list;
  when calculating the field `protectionRuleExists`
  as part of a Graphql query, then multiple queries were executed,
  see https://gitlab.com/gitlab-org/gitlab/-/merge_requests/146206#note_1871347682
  see https://gitlab.com/gitlab-org/gitlab/-/issues/437928#note_1891842044
- By adding the batch loader as part of this MR,
  only a single database query is executed

Changelog: other