Upgrade async-stream-impl to 0.3.4 am: 542806003b am: d275319ec6 am: 6e66b26c56 am: 85d9b06ef5 am: be8aa99463

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

Change-Id: Iede109c7677c27c03f184d738cf01ffcc60d4022
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>