Android 12.0.0 release 26
Generate apex_available from c2a instead of a patch am: 95ac981491 am: 17ed030c3a am: 86f46160f6

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

Change-Id: Ic3a949e84673d53f33be0ecc397e19463d880bdb