Merge "aconfig: add list_flag api cxx interlop" into main am: 9d21525b am: 341557f5

Original change: https://android-review.googlesource.com/c/platform/build/+/3079587



Change-Id: If731976287515a794e6867dd0823c35d884a72fe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>