[backport 2.3.x] API (string dtype): implement hierarchy (NA > NaN, pyarrow > python) for consistent comparisons between different string dtypes (#61138) #61649
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…for consistent comparisons between different string dtypes (pandas-dev#61138) * API (string dtype): implement hierarchy (NA > NaN, pyarrow > python) for consistent comparisons between different string dtypes * fix string arith tests * fix for build without pyarrow * fix xfail condition * fix type annotation * re-add test with list * cleanup * Fix ArrowExtensionArray and add whatsnew * fixup --------- Co-authored-by: Richard Shadrach <[email protected]> Co-authored-by: Matthew Roeschke <[email protected]>
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Backport of #61138