Pin Windows CI to windows-2022 for VS2022 matrix jobs

[Copilot]

The Windows workflow matrix entry build (Visual Studio 17 2022, Release, ON, ON, ON, ON, OFF, ON, 20) failed during CMake configure because windows-latest moved to an image without Visual Studio 2022. This change restores generator/runtime compatibility for the existing matrix configuration.

• Root cause

  • Workflow requested CMake generator Visual Studio 17 2022.
  • Runner label windows-latest resolved to a newer image lacking VS2022.

• Change

  • Updated .github/workflows/windows.yml:
    • runs-on: windows-latest → runs-on: windows-2022
  • No matrix values or build flags were changed.

• Effect

  • Keeps current Windows build matrix semantics intact.
  • Ensures jobs using -G "Visual Studio 17 2022" run on a compatible hosted image.

jobs:
  build:
    runs-on: windows-2022
    strategy:
      matrix:
        config:
          - GENERATOR: "Visual Studio 17 2022"