Merge "aconfig: Add exported mode to aconfig Java library generation." into main am: df2b347f

Original change: https://android-review.googlesource.com/c/platform/build/+/2848173



Change-Id: I8849f27d93c682cfdb9558ed59605afb62cb6f5f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>