Merge "Revert "Revert "aconfig: @hide generated Java code""" into main am:...

Merge "Revert "Revert "aconfig: @hide generated Java code""" into main am: 72c3b38a am: 6644d9fb

Original change: https://android-review.googlesource.com/c/platform/build/+/2745644



Change-Id: Ib4a337b955ca312a9da137a99c641d06cb84e586
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>