go/src/cmd/go/internal/work: compile "internal/abi" with "-+"

"internal/abi" package depends on runtime package and are supposed to
compile with "-+" option.Added internal/abi in the known list of package
that runtime depends on,so that "internal/abi" compiles with "-+".

Fixes #45144

Change-Id: Iad9e2589f2fbd014260cb8ef9f943d2126015fe1
Reviewed-on: https://go-review.googlesource.com/c/go/+/306289


Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>