Make either available to product and vendor am: e0d0c6826e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/either/+/2476307

Change-Id: Ic173300c54d853a4145c64baf7cd6aab33e02081
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>