Merge "Export release flag types to soong" into main am: 0ea5497ce4

Original change: https://android-review.googlesource.com/c/platform/build/+/3096106

Change-Id: Ic75a085dce3dfa8a27cef63416975c73b2eb4aa1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>