enh: Add .rows(named=False) support for pyarrow (#1155)

narwhals/_arrow/dataframe.py

@@ -87,8 +87,7 @@ def rows(
         self, *, named: bool = False
     ) -> list[tuple[Any, ...]] | list[dict[str, Any]]:
         if not named:
-            msg = "Unnamed rows are not yet supported on PyArrow tables"
-            raise NotImplementedError(msg)
+            return list(self.iter_rows(named=False))  # type: ignore[return-value]
         return self._native_frame.to_pylist()  # type: ignore[no-any-return]
 
     def iter_rows(

tests/frame/rows_test.py

@@ -92,14 +92,6 @@ def test_rows(
     expected: list[tuple[Any, ...]] | list[dict[str, Any]],
 ) -> None:
     df = nw.from_native(df_raw, eager_only=True)
-    if isinstance(df_raw, pa.Table) and not named:
-        with pytest.raises(
-            NotImplementedError,
-            match="Unnamed rows are not yet supported on PyArrow tables",
-        ):
-            df.rows(named=named)
-        return
-
     result = df.rows(named=named)
     assert result == expected