ci: Enable MSVC C++ module support tests

Brad Kingrequested to merge
brad.king/cmake:gitlab-ci-named-modules-msvc into master

Since !7597 (merged), the version of MSVC used in CI test jobs supports the cl -scanDependencies functionality we need to support C++ modules. Enable the corresponding tests.

This enables tests in CI for the functionality added by !7481 (merged).

Edited by Brad King

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