Changes:
- Updated the website to support two new usage statistics sent by Fleet
servers: `numHostsFleetMDMEnrolledWindows` and
`numHostsFleetMDMEnrolledMacOS`
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## Summary by CodeRabbit
* **New Features**
* Usage analytics now track Fleet MDM-enrolled host counts separately
for macOS and Windows.
* Historical usage records include these platform-specific enrollment
totals.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Eric
74c2b79f05