Make async-stream-impl available to product and vendor am: 605b758dd6 am: 497fba26c0 am: eb2f621118 am: 547bcd7512 am: 7ad9270715

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-stream-impl/+/2475714

Change-Id: Ida3fc5ae4f4d8503d9ff4471b5ea928c138d3bd2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>