Ensure msvc fallback does not ignore 194 binaries

[AbrilRBS]

Changelog: Bugfix: Ensure msvc cppstd fallback does not ignore 194 binaries Docs: Omit

This is one of the alternatives, another one might be to test each factor in isolation too?

Closes https://github.com/conan-io/conan/issues/16564

[memsharded]

This is one of the alternatives, another one might be to test each factor in isolation too?

Yes, I think the combinatorics is not complete, and the empty element of each factor should also be used for the combinations.

[AbrilRBS]

Good catch. I've changed the fix to address what I think the underlying issue is, can discuss it later :)