Generate apex_available from c2a instead of a patch am: 798c708a18 am: 0a01c5a1c8 am: eaaa0489c9 am: b3d04ce05e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/idna/+/1688778

Change-Id: I6140c12ce16ce4bf250ead77708a456b43c13090