Generate apex_available from c2a instead of a patch am: b50f98162e am: 1dcc5761ca am: ed027bc93f am: 391642653e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bytes/+/1688667

Change-Id: Iae8ca24aad593e8ca507c19bd84f3d5e5ad346e6