Make proc-macro-error-attr available to product and vendor am: e720490b44 am: ee061705d4 am: 1fdea0dd71 am: 9a7622aa52

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-error-attr/+/2476392

Change-Id: If38a977e747401f154cc1d31d68747ff59b3eaf5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>