fixup! Fix pandas.api.extensions.ExtensionArray._reduce

Author: ivonastojanovic

pandas/core/arrays/base.py

@@ -2049,11 +2049,11 @@ def _reduce(
         >>> pd.array([1, 2, 3])._reduce("sum")
         6
         >>> pd.array([1, 2, 3])._reduce("mean")
-        2
+        2.0
         >>> pd.array([1, 2, 3])._reduce("median")
-        2
+        2.0
         >>> pd.array([1, 2, 3])._reduce("mean", keepdims=True)
-        array([2])
+        array([2.0])
         >>> pd.array([1, np.nan, 2, np.nan])._reduce("sum", skipna=False)
         nan
         >>> pd.array([1, np.nan, 2, np.nan])._reduce("sum", skipna=True)