fix: apply clang-format to CUDA macros (#16017)
clang-format previously broke long CUDA macros (e.g. __launch_bounds__) into
unreadable line breaks inside template declarations, such as:
template<int D, int ncols, int nwarps, int VKQ_stride,
typename KQ_acc_t, bool use_logit_softcap>
__launch_bounds__(nwarps*ggml_cuda_get_physical_warp_size(), 1)
This change adjusts formatting rules so that CUDA macros remain consistent
and aligned with the surrounding template syntax.
