Merge "aconfig: add flag type information to list flag api" into main am: a77155cd am: 971e7ed6

Original change: https://android-review.googlesource.com/c/platform/build/+/3022623



Change-Id: I39f14a6899b17bbaed94c366f5465194253f8d29
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>