Upgrade GitHub Actions runner images to windows-2025 and install Windows SDKs#852

Arlodotexe wants to merge 10 commits into

mainCommunityToolkit/Windows:mainfrom

check,ci/runner,images,github,actions/improvement/windows-2025,upgrade,windows-sdks/5.12.2026,arlodotexeCommunityToolkit/Windows:check,ci/runner,images,github,actions/improvement/windows-2025,upgrade,windows-sdks/5.12.2026,arlodotexeCopy head branch name to clipboard