Generate apex_available from c2a instead of a patch am: 95ac981491 am: 17ed030c3a am: 86f46160f6 am: 779a8672c9 am: 74bfefd714

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/form_urlencoded/+/1688363

Change-Id: Ic3d0fa436e8b0c41fb6268b09ec4de5c405d0e7a