[automerger skipped] Make apex variants of prebuilt apex exported modules...

[automerger skipped] Make apex variants of prebuilt apex exported modules available in make am: c30aea20 -s ours

am skip reason: Merged-In I57537d17d4920d37d896ed491c6aaa15302cb25d with SHA-1 a35f8db1 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/15027891

Change-Id: I39c19da7f55ded63ca23da2b11f7726d857bf8bd