Upgrade async-stream-impl to 0.3.4 am: 542806003b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-stream-impl/+/2466093

Change-Id: Ic366c8c65aa289661170ae021c5dadfcc11d7938
Signed-off-by: Automerger Merge Worker <[email protected]>