Merge "aconfig: add @UnsupportedAppUsage to methods in generated flags" into...

Merge "aconfig: add @UnsupportedAppUsage to methods in generated flags" into main am: 057a3dd4 am: 59f91d6e am: 13fe9bfa

Original change: https://android-review.googlesource.com/c/platform/build/+/2777061



Change-Id: I0c5d113d26160bf01930cfa448217f8f58438911
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>