fix: ensure ts_project _types target has the right visibility

[menny]

If this is not passed, the _types target will get the package's default visibility.

In out case, we have a package with a very restrictive visibility, but one of the targets (ts_project) in the package is explicitly set to public. We want to depend on the _types target, but that is not visible due the default visibility.
NOTE: This is relevant only when an dts emitter is provided.

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Changes are visible to end-users: yes

• Searched for relevant documentation and updated as needed: yes
• Breaking change (forces users to change their own code or config): no
• Suggested release notes appear below: no

Test plan

• Manual testing; please provide instructions so we can reproduce:
  Create a target with a dts emitter. Ensure the _types target gets the same visibility of the main target.

[aspect-workflows]

Test

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163 tests (100.0%) were fully cached saving 16s.

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[jbedard]

Thanks for the fix 👍

[menny]

wow. that was quick :)

[jbedard]

The notification basically popped up under my mouse, and lgtm lol 👍