Merge branch 'fix-shmem-groupby-dispatch' into test-l4-fix #20218

Job	Run time
wheel-build-libcudf / compute-matrix	3s
wheel-build-libcudf / 11.8.0, 3.12, amd64, rockylinux8	8m 22s
wheel-build-libcudf / 12.5.1, 3.12, amd64, rockylinux8	9m 10s
wheel-build-pylibcudf / compute-matrix	3s
wheel-build-pylibcudf / 11.8.0, 3.10, amd64, rockylinux8	5m 16s
wheel-build-pylibcudf / 12.5.1, 3.10, amd64, rockylinux8	5m 23s
wheel-build-pylibcudf / 11.8.0, 3.11, amd64, rockylinux8	5m 27s
wheel-build-pylibcudf / 12.5.1, 3.11, amd64, rockylinux8	5m 12s
wheel-build-pylibcudf / 11.8.0, 3.12, amd64, rockylinux8	5m 35s
wheel-build-pylibcudf / 12.5.1, 3.12, amd64, rockylinux8	5m 31s
wheel-build-cudf / compute-matrix	3s
wheel-build-cudf / 11.8.0, 3.10, amd64, rockylinux8	4m 51s
wheel-build-cudf / 12.5.1, 3.10, amd64, rockylinux8	4m 24s
wheel-build-cudf / 11.8.0, 3.11, amd64, rockylinux8	4m 33s
wheel-build-cudf / 12.5.1, 3.11, amd64, rockylinux8	4m 55s
wheel-build-cudf / 11.8.0, 3.12, amd64, rockylinux8	4m 42s
wheel-build-cudf / 12.5.1, 3.12, amd64, rockylinux8	4m 37s
wheel-tests-cudf / compute-matrix	5s
wheel-tests-cudf / 12.5.1, 3.10, amd64, ubuntu24.04, l4, latest-driver, oldest-deps	1s
pr-builder / run	1s
	1h 18m 14s

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