fix bug of rcut_smth >= rcut in the test cases #6153

Job	Run time
Build source distribution	14s
determine-arm64-runner	1s
Build wheels for cp311-manylinux_x86_64	5m 47s
Build wheels for cp311-manylinux_x86_64	7m 44s
Build wheels for cp311-macosx_x86_64	6m 35s
Build wheels for cp311-macosx_arm64	3m 47s
Build wheels for cp311-win_amd64	6m 7s
Build wheels for cp310-manylinux_aarch64	5m 31s
build_pypi_index	23s
build_docker (12)	3m 48s
build_docker (_cu11, 11)	4m 4s
upload_pypi	0s
deploy_pypi_index	0s
Pass testing build wheels	1s
	44m 2s

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