Make merge_derive available to product and vendor am: ce3292f0c4 am: f319f4cfbb am: f941cedee4 am: 23aa87e26a

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/merge_derive/+/2476444

Change-Id: I6b183daa94851d55f0c41787cd50dfc080ad6f29
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>