For #28215
Allows users to use fleet secret variables for macos setup script for
gitops.
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- [ ] Added/updated automated tests
- [x] Manual QA for all new/changed functionality
For [#27249](https://github.com/fleetdm/fleet/issues/27249)
fix issue where we custom profiles were not removed when they were
removed from default.yml and running gitops.
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality