Various small changes to the dataset type to improve safety and be mo… #4269

Job	Run time
devcontainer / build (amd64, 12.2, conda)	12m 18s
checks / other-checks	34s
checks / check-style	1m 9s
devcontainer / build (amd64, 12.2, pip)	12m 18s
conda-cpp-build / compute-matrix	4s
wheel-build-pylibraft / compute-matrix	4s
wheel-build-pylibraft / 11.8.0, 3.9, amd64, centos7	10m 50s
wheel-build-pylibraft / 12.2.2, 3.9, amd64, centos7	10m 48s
wheel-build-pylibraft / 11.8.0, 3.10, amd64, centos7	10m 50s
wheel-build-pylibraft / 12.2.2, 3.10, amd64, centos7	10m 50s
wheel-build-pylibraft / 11.8.0, 3.11, amd64, centos7	10m 49s
wheel-build-pylibraft / 12.2.2, 3.11, amd64, centos7	10m 48s
wheel-build-pylibraft / 11.8.0, 3.9, arm64, rockylinux8	10m 47s
wheel-build-pylibraft / 12.2.2, 3.9, arm64, rockylinux8	10m 48s
wheel-build-pylibraft / 11.8.0, 3.10, arm64, rockylinux8	10m 50s
wheel-build-pylibraft / 12.2.2, 3.10, arm64, rockylinux8	10m 48s
wheel-build-pylibraft / 11.8.0, 3.11, arm64, rockylinux8	10m 49s
wheel-build-pylibraft / 12.2.2, 3.11, arm64, rockylinux8	10m 48s
conda-cpp-build / build (amd64, 3.10, 11.8.0, ubuntu22.04)	10m 46s
conda-cpp-build / build (amd64, 3.10, 12.2.2, ubuntu22.04)	10m 50s
conda-cpp-build / build (arm64, 3.10, 11.8.0, ubuntu22.04)	10m 47s
conda-cpp-build / build (arm64, 3.10, 12.2.2, ubuntu22.04)	10m 48s
wheel-tests-pylibraft	1s
wheel-build-raft-dask	1s
conda-cpp-tests	1s
conda-cpp-checks	1s
conda-python-build	1s
wheel-tests-raft-dask	1s
docs-build	1s
conda-python-tests	1s
pr-builder	1s
	3h 19m 32s

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