Misinterprets `./...` and checks stdlib unless on go 1.25

[Groxx]

After building with a go.mod that includes a newer golang.org/x/tools so it actually builds, running this on 1.23.4 or 1.24.0 (and likely other versions) misbehaves:

$ go run github.com/google/go-licenses/v2 check ./...
...
E0905 16:57:46.379094   50690 library.go:159] Package go/constant does not have module info. Non go modules projects are no longer supported. For feedback, refer to https://github.com/google/go-licenses/issues/128.
E0905 16:57:46.379099   50690 library.go:159] Package hash/maphash does not have module info. Non go modules projects are no longer supported. For feedback, refer to https://github.com/google/go-licenses/issues/128.
...

./... does not include stdlib packages, only ... does.

running on go 1.25.0+ works as expected and doesn't complain about stdlib stuff.