Merge "rust: Mark DeathRecipient Send and Sync" am: 593991bfd9 am: 3d3003b3cf am: bf0155a065

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2054944

Change-Id: I13589bb3cd62d95032a80dba20ab7f1184a3b1ba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>