x/vuln/cmd/govulncheck: add module info to paths in text traces

[zpavlinovic]

govulncheck version

Go: go1.23.0
Scanner: [email protected]

Does this issue reproduce at the latest version of golang.org/x/vuln?

yes

Output of go env in your module/workspace:

Does not matter.

What did you do?

Run govulncheck -show trace on any module that has some symbol-level vulnerabilities.

What did you see happen?

Paths in traces do not contain any module info, which can be confusing.

src/sync/once.go:67:11: ...
pkg/store/cache/caching_bucket_test.go:442:12: ...

What did you expect to see?

Show the last segment of the module name, for example:

[email protected]/src/sync/once.go:67:11: ...
[email protected]/pkg/store/cache/caching_bucket_test.go:442:12: ...

[gopherbot]

Change https://go.dev/cl/614135 mentions this issue: internal/scan: add module info to symbol paths in traces mode