Generate apex_available from c2a instead of a patch am: 84153911d3 am: b586767a94 am: 83cd478ec3

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/thiserror/+/1689361

Change-Id: I56ab1155223bab886590341a048cb79b6ddb1229