Cuda-cccl clobbers cuda-thrust conda packages in nvidia channel

cuda-cccl will clobber cuda-thrust:

$ mamba create -y -n thrust cuda-thrust -c nvidia
$ mamba activate thrust
(thrust) bash-4.2$ grep "^#define THRUST_VERSION" $CONDA_PREFIX/include/thrust/version.h
#define THRUST_VERSION 101201
(thrust) bash-4.2$ mamba install cuda-cccl -y -c nvidia
(thrust) bash-4.2$ grep "^#define THRUST_VERSION" $CONDA_PREFIX/include/thrust/version.h
#define THRUST_VERSION 200001

(thrust) bash-4.2$ mamba list
# packages in environment at /home/burt/.conda/envs/thrust:
#
# Name                    Version                   Build  Channel
cuda-cccl                 12.1.109                      0    nvidia
cuda-thrust               11.4.43              h00096a5_0    nvidia

The conda-forge folks handled the similar issue with cub by adding constraints on cuda-cccl in the cub package.