Make proc-macro-error available to product and vendor am: cdec10381f am: c022b640ee am: d180d01735 am: 1e34a9b7a3

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

Change-Id: I68b68027590ff1ad6e4005d57a1429cd941bb34f
Signed-off-by: Automerger Merge Worker <[email protected]>