Fixes#31934
Manually QA'd using a Migration Assistant flow from one macOS VM to
another.
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
## Testing
- [x] QA'd all new/changed functionality manually
## fleetd/orbit/Fleet Desktop
- [x] Verified compatibility with the latest released version of Fleet
(see [Must
rule](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/workflows/fleetd-development-and-release-strategy.md))
- [x] If the change applies to only one platform, confirmed that
`runtime.GOOS` is used as needed to isolate changes
- [x] Verified that fleetd runs on macOS, Linux and Windows
- [x] Verified auto-update works from the released version of component
to the new version (see [tools/tuf/test](../tools/tuf/test/README.md))
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* macOS: Prevents duplicate hosts by persisting the hardware UUID and
triggering re-enrollment when it changes (e.g., after hardware migration
or system restore). Improves reliability across restarts and cleans up
legacy data during migration.
* **Documentation**
* Added changelog entry noting the macOS-specific fix for duplicate
enrolled hosts (UUID/SN).
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Victor Lyuboslavsky
1f3005dd3a