Generate apex_available from c2a instead of a patch am: df5e894296 am: 8c1a78df60 am: 043907a4a5 am: e8ff6eb7c0

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/percent-encoding/+/1689910

Change-Id: Ia1a896ae1de53e9cc94e39e2dd5d06c02a9e25ab