Merge "Export FlaggedApi.java to libcore/ and art/" into main am: 7f58004434 am: a25bba6018 am: fada9ab6ef

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/modules-utils/+/2855670

Change-Id: I92d5c01fcc64bb066ca80a0733376c22895b9797
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>