Make syn-mid available to product and vendor am: 91946bec9a am: c6d5e8bd97 am: e960ab6198

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/syn-mid/+/2476504

Change-Id: I87bb5112c40c800a47f45562735d1ffcee7b1982
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>