Allowe project owners to use `include_hidden` in Project API"
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The following discussion from !135727 should be addressed:
- [ ] @tkuah started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/135727#note_1632702317): (+2 comments)
> I see `include_hidden` is already present `ee/app/finders/ee/projects_finder.rb`. Should it have the same treatment like `include_pending_delete` in `app/finders/projects_finder.rb` ?
>
> If not, should it be made available to all users ?
/cc @vyaklushin
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