CI: take down nvidia-persistenced via pkill, not systemctl #4146

Job	Run time
detect-changes	2m 17s
Probe custom-DRIVER install	2m 28s
ci-vars	2m 35s
should-skip	4s
Test sdist linux-64 / Test sdist builds	5m 38s
Test sdist win-64 / Test sdist builds	6m 5s
Build linux-64, CUDA 13.3.0 / py3.13	5m 34s
Build linux-64, CUDA 13.3.0 / py3.14	5m 35s
Build linux-aarch64, CUDA 13.3.0 / py3.10	5m 38s
Build linux-64, CUDA 13.3.0 / py3.11	5m 25s
Build linux-64, CUDA 13.3.0 / py3.12	5m 28s
Build linux-aarch64, CUDA 13.3.0 / py3.11	5m 38s
Build linux-64, CUDA 13.3.0 / py3.10	5m 25s
Build linux-aarch64, CUDA 13.3.0 / py3.12	5m 39s
Build linux-aarch64, CUDA 13.3.0 / py3.14	5m 38s
Build win-64, CUDA 13.3.0 / py3.10	6m 0s
Build linux-64, CUDA 13.3.0 / py3.14t	5m 37s
Build win-64, CUDA 13.3.0 / py3.13	6m 1s
Build win-64, CUDA 13.3.0 / py3.14t	6m 0s
Build linux-aarch64, CUDA 13.3.0 / py3.14t	5m 37s
Build win-64, CUDA 13.3.0 / py3.11	6m 0s
Build linux-aarch64, CUDA 13.3.0 / py3.13	5m 35s
Build win-64, CUDA 13.3.0 / py3.12	6m 1s
Build win-64, CUDA 13.3.0 / py3.14	6m 1s
Test ${{ matrix.host-platform }}	0s
Test ${{ matrix.host-platform }}	-1s
Docs	0s
Test ${{ matrix.host-platform }}	0s
Check job status	3s
	2h 2m 1s

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