Merge topic 'lang-std'

dcbc2ef00d CompilerId: Clarify CUDA, HIP, ObjC, ObjC++ standard level detection
cf457fbf9c CompilerId: Drop MSVC conditions from ObjC and ObjC++
f606a27e8d ObjCXX: Fix detection of C++20 default compiler mode

Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Raul Tambre <raul@tambre.ee>
Merge-request: !9438