Merge "aconfig: add flag value query pub function" into main am: f39e4a22 am: 85addbc9

Original change: https://android-review.googlesource.com/c/platform/build/+/2932353



Change-Id: Ib7a50137984674eed87f90d763c94809b0b5d361
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>