Update CI/CD to work with ASAN-by-default build

Since ASAN is now enabled by default in CMakeLists.txt, update the CI/CD
workflow to:

1. For sanitizer=asan builds: Keep ASAN (enabled by default) and add UBSan
2. For sanitizer=none builds: Explicitly disable ASAN with -DENABLE_ASAN=OFF

This ensures we test both configurations:
- With ASAN (100% stable, recommended for production)
- Without ASAN (for performance comparison and compatibility testing)

Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: fjtrujy

.github/workflows/compilation.yml

@@ -61,8 +61,12 @@ jobs:
         export PS2DEV=$PWD/ps2dev
         export PATH="$PS2DEV/bin:$PATH"
         if [ "${{ matrix.sanitizer }}" = "asan" ]; then
-          export SAN="-fsanitize=address,undefined"
+          # ASAN is enabled by default in CMakeLists.txt, just add UBSan
+          export SAN="-fsanitize=undefined"
           export EXTRA_CMAKE_FLAGS="-DCMAKE_C_FLAGS='$SAN' -DCMAKE_EXE_LINKER_FLAGS='$SAN'"
+        else
+          # Explicitly disable ASAN for non-sanitizer builds to test without it
+          export EXTRA_CMAKE_FLAGS="-DENABLE_ASAN=OFF"
         fi
         cmake -B build-cmake -DCMAKE_BUILD_TYPE=${{ matrix.debug }} -DCMAKE_INSTALL_PREFIX=$PS2DEV ${EXTRA_CMAKE_FLAGS}
         cmake --build build-cmake --config ${{ matrix.debug }}