Merge "aconfig: add exported mode in rust codegen" into main am: 0f1b9da4 am: 3fcebe3b

Original change: https://android-review.googlesource.com/c/platform/build/+/2881246



Change-Id: I83ec7600920d83e8f9ae7f48eb8c78ca67c3f9da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>