Upgrade async-stream-impl to 0.3.4 am: 542806003b am: d275319ec6 am: 6e66b26c56 am: 85d9b06ef5

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

Change-Id: I3c99e73075679f4c21a86e383e286564ad803950
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>