Merge topic 'vs-clang-cl-c++23'

30139913e9 VS: Restore support for mixing C++23 and C in one target with clang-cl
57da8712c1 VS: Factor out check for mixed C and C++ target

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !10082