Generate apex_available from c2a instead of a patch am: 01ff0c6d2e am: 0a44958a3e am: ab3823c0e4 am: c9e1025196

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/memoffset/+/1688983

Change-Id: Id361396e3edb1937e080585805f3a947961cb1f6