BUG: pandas/tests/test_algos.py::TestValueCounts::test_value_counts_normalized failing on ARM tests

[MarcoGorelli]

Pandas version checks

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Reproducible Example

pytest pandas/tests/test_algos.py::TestValueCounts::test_value_counts_normalized[M8[ns]]

Issue Description

See https://app.circleci.com/pipelines/github/pandas-dev/pandas?branch=main - looks like since #49361, this has been failing

Expected Behavior

cc @jbrockmendel @mroeschke does that PR look related? The test hits

pandas/pandas/core/arrays/datetimes.py

Line 2235 in 4e7ade7

data = data.astype(np.int64)

which was modified in that PR

Installed Versions

Replace this line with the output of pd.show_versions()

[jbrockmendel]

mentioned in #49361, it is plausible that changing that line to data = data.astype("M8[ns]").view("i8") will fix the weird ARM behavior