Meta: Update Windows Nightly CI to Windows 2025 Image with Sanitizers

Github Actions just updated windows-2025 to LLVM 20, which is the
minimum version required for us to build and run tests with sanitizers

Now that we've added support, enable the Sanitizer build in CI.

.github/workflows/nightly-windows.yml

@@ -19,7 +19,7 @@ jobs:
   CI:
     if: github.repository == 'LadybirdBrowser/ladybird'
 
-    runs-on: windows-2022
+    runs-on: windows-2025
 
     steps:
       - uses: actions/checkout@v4
@@ -41,34 +41,48 @@ jobs:
         uses: ./.github/actions/cache-restore
         id: 'cache-restore'
         with:
-          runner_labels: '["windows-2022"]'
+          runner_labels: '["windows-2025"]'
           os: Windows
           arch: x86_64
           toolchain: ClangCL
-          cache_key_extra: Windows_CI
+          cache_key_extra: Windows_Sanitizer_CI
           download_cache_path: ${{ github.workspace }}/Build/caches
           vcpkg_cache_path: ${{ github.workspace }}/Build/caches/vcpkg-binary-cache
 
       - name: Create Build Environment
         working-directory: ${{ github.workspace }}
         run: |
-          cmake --preset Windows_CI
+          cmake --preset Windows_Sanitizer_CI
 
       - name: Build
         working-directory: ${{ github.workspace }}
         run: |
-          cmake --build --preset Windows_CI
+          cmake --build --preset Windows_Sanitizer_CI
 
       - name: Save Caches
         uses: ./.github/actions/cache-save
         with:
-          runner_labels: '["windows-2022"]'
+          runner_labels: '["windows-2025"]'
           arch: x86_64
           vcpkg_cache_path: ${{ github.workspace }}/Build/caches/vcpkg-binary-cache
           vcpkg_cache_primary_key: ${{ steps.cache-restore.outputs.vcpkg_cache_primary_key }}
 
       - name: Test
         working-directory: ${{ github.workspace }}
-        run: ctest --preset Windows_CI --timeout 1800
+        run: ctest --preset Windows_Sanitizer_CI --timeout 1800
         env:
           TESTS_ONLY: 1
+          ASAN_OPTIONS: 'log_path="${{ github.workspace }}\asan.log"'
+          UBSAN_OPTIONS: 'log_path="${{ github.workspace }}\ubsan.log"'
+
+      - name: Sanitizer Output
+        if: ${{ !cancelled() && inputs.build_preset == 'Windows_Sanitizer_CI' }}
+        working-directory: ${{ github.workspace }}
+        run: |
+          log_output=$(find . -maxdepth 1 \( -name 'asan.log.*' -o -name 'ubsan.log.*' \) -exec cat {} \; )
+          if [ -z "$log_output" ]; then
+            echo "No sanitizer issues found."
+          else
+            echo "$log_output"
+            echo "Sanitizer errors happened while running tests; see the Test step above."
+          fi