Force module install on Mac

[homapf]

Changes

• On Mac, adding a step to make sure the native module is installed for the current platform.

Related Issues

On Mac, Unity is installed automatically with the right module.
But if Unity is already installed with the wrong module on the machine, it will run without installing the missing module.

Successful Workflow Run Link

PRs don't have access to secrets so you will need to provide a link to a successful run of the workflows from your own
repo.

• I can look into running tests on our repo if really needed but our current setup doesn't allow it.

Checklist

• Read the contribution guide and accept the
  code of conduct
• Docs (If new inputs or outputs have been added or changes to behavior that should be documented. Please make a PR
  in the documentation repo)
• Readme (updated or not needed)
• Tests (added, updated or not needed)

[github-actions]

[AndrewKahr]

I'm slightly confused, does the main Unity Editor install function not install all the necessary modules already? It looks like the ensure function that's been added is doing the same install process but using the install-modules command instead.