Make proc-macro-error available to product and vendor am: cdec10381f am: c022b640ee am: d180d01735

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-error/+/2476453

Change-Id: Ifa0d5642fef73a0e7fa3e4dfd5e5cae2502f2588
Signed-off-by: Automerger Merge Worker <[email protected]>