Make async-trait available to product and vendor am: 9c88d08347

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-trait/+/2476131

Change-Id: I1b7b75f6d337dc815bd314b453bb809089237ded
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>