Merge "rust: properly handle async->async handles" into main am: ac728795d4

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3095299

Change-Id: Ibc88d11b49b66486b3eb6dd8414a0e86a70cac82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>