ci: add 20min timeout to Windows-Tests-Simple workflow to prevent hangs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: xen2

.github/workflows/test-windows-simple.yml

@@ -24,6 +24,7 @@ jobs:
   Windows-Tests:
     name: Test (${{ github.event.inputs.build-type || inputs.build-type || 'Debug' }}, Simple)
     runs-on: windows-2025-vs2026
+    timeout-minutes: 20
     steps:
       - uses: actions/checkout@v4
         with: