Merge "Add soong config variable Release_expose_flagged_api" into main am: 19cd806d

Original change: https://android-review.googlesource.com/c/platform/build/+/2763272



Change-Id: I1054493df1c337790d479531cb8d103ac917577f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>