test: check that ts_library @npm strict deps work

[gregmagolan]

Add missing coverage to verify that ts_library strict deps of @npm dependencies works

I added a comment as something to think about:

    # NB: We don't require the `@npm//semver` package for the typescript compile
    # action as the .d.ts files live in @types/semver. If the resulting
    # .js file is run downstream in a nodejs_binary rule, however, the
    # `@npm//semver` dep will be required at that point.
    # TODO: Is it desirable to automatically add @npm//semver as a transitive
    #       dep if @npm//@types/semver is a dep so that downtream nodejs_binary
    #       rules get this automatically?

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature (please, look at the "Scope of the project" section in the README.md file)
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe: Missing test coverage added for existing feature

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information