Merge "Revert "[binder] Expose public Rust API at crate top level"" am: dd63c88f4e am: 46ea1d02a4 am: c2a0182758 am: ad0af1216a

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1953780

Change-Id: Ieb7c5693414580867a00383da0eeb4933c7e9557