fix(nodejs): find licenses for packages with slash

[DmitriyLewen]

Description

We don't need to skip package.json files (when searching for licenses for package-lock.json files) if package name contains slash (e.g. node_modules/@babel/parser/package.json)

Related issues

• Close bug(npm): Trivy doesn't detect licenses for packages with / #5835

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).