Fix rolling mean on bool arrays #17232

Job	Run time
detect ci trigger	2s
Event File	2s
ubuntu-latest py3.10	2m 22s
ubuntu-latest py3.13	2m 22s
macos-latest py3.10	2m 27s
macos-latest py3.13	2m 25s
windows-latest py3.10	2m 7s
windows-latest py3.13	2m 6s
ubuntu-latest py3.10 bare-minimum	2m 1s
ubuntu-latest py3.10 min-all-deps	2m 22s
ubuntu-latest py3.13 all-but-numba	2m 24s
ubuntu-latest py3.12 all-but-dask	2m 10s
ubuntu-latest py3.13 flaky	2m 20s
ubuntu-latest py3.10 mypy	2m 23s
ubuntu-latest py3.13 mypy	2m 21s
	29m 54s

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