Improve UX for restricted visibility settings
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Let's improve on the UX for the restricted visibility settings:
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1. The double negative of restricted visibility settings is confusing. Let's re-think how to make this less confusing.
2. Explore the idea of forcing a single selection.
## More Info
The following discussion from !62340 should be addressed:
- [ ] @mnichols1 started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62340#note_593491792): (+2 comments)
> Side note, I don't love the double negative of restricted visibility settings, with check meaning it is off and I think we should probably force at least a single selection, but those are follow issues for sure.
issue