Merge topic 'clang-cuda-archs'

33fb4e1a50 CUDA/Clang: Add archs supported by Clang 21
a6aaabbdff CUDA/Clang: Reorder the logic for setting supported archs
695af87c6f CUDA/Clang: Fix list of architectures supported by Clang < 20.1

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !10848