Fix: Use ASAN feature instead of config setting
How to build with ASAN flags:
```
python build/build.py build \
--wheels=jaxlib,jax-cuda-plugin,jax-cuda-pjrt \
--bazel_options=--config=asan \
--cuda_major_version=12 \
--python_version=3.13
```
PiperOrigin-RevId: 861970020
