Fix Windows 11 OS detection and Windows Server compatibility in validation reports

[Copilot]

The Installation Validator was incorrectly reporting Windows 11 systems as "Windows 10" in validation reports, and the initial fix introduced a regression where Windows Server 2022+ systems would be misidentified as "Windows 11".

Root Cause

The OS detection logic only read the "ProductName" registry key, which on Windows 11 systems often still reports "Windows 10" for backward compatibility reasons. Additionally, Windows Server 2022+ uses the same build numbers (22000+) as Windows 11, making simple build number detection insufficient.

Solution

Enhanced the FriendlyName property in OperatingSystemInfo.cs to properly detect Windows 11 while maintaining Windows Server compatibility:

1. Windows 11 Detection: Uses build number 22000+ to identify Windows 11 systems
2. Server Edition Handling: Excludes Windows Server editions from Windows 11 detection logic
3. Version Information: Uses DisplayVersion registry value for accurate Windows 11 version details
4. Backward Compatibility: Preserves existing logic for older Windows versions

Example Behavior

Before:

• Windows 11 22H2 → Reports as "Windows 10 Pro"
• Windows Server 2022 → Reports as "Windows 10" (incorrect)

After:

• Windows 11 22H2 → Reports as "Windows 11 22H2"
• Windows Server 2022 → Reports as "Windows Server 2022" (correct)
• Windows 10 systems → Continue to work exactly as before

The fix uses Microsoft's official build number threshold while properly distinguishing between client and server Windows editions.

Fixes #254.

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[Copilot]

@copilot Copilot, the suggested code will not work properly with Windows Server editions. Modify it accordingly.

Fixed the Windows Server compatibility issue by adding a check to exclude server editions from the Windows 11 detection logic. Windows Server 2022+ will now correctly report as "Windows Server" instead of being misidentified as "Windows 11". Commit: 53aa015

[Copilot]

Pull Request Overview

This PR fixes OS detection issues in the Installation Validator where Windows 11 systems were incorrectly reported as "Windows 10" and introduces proper Windows Server compatibility. The fix enhances the OS detection logic to use build numbers for accurate Windows 11 identification while preserving correct behavior for Windows Server editions.

• Enhanced Windows 11 detection using build number 22000+ threshold
• Added Windows Server edition exclusion to prevent misidentification
• Integrated DisplayVersion registry value for accurate Windows 11 version reporting

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[Yuri05]

@copilot Copilot, unlink the issue #254 from this pull request.