reshape the array back after maybe_infer_to_datetimelike

Author: tonyyuyiding

pandas/core/construction.py

@@ -612,10 +612,8 @@ def sanitize_array(
         if dtype is None:
             subarr = data
             if data.dtype == object and infer_object:
-                # GH#61026
-                if data.ndim != 1:
-                    subarr = subarr.ravel()
-                subarr = maybe_infer_to_datetimelike(subarr)
+                fltarr = data.ravel() # GH#61026
+                subarr = maybe_infer_to_datetimelike(fltarr).reshape(data.shape)
             elif data.dtype.kind == "U" and using_string_dtype():
                 from pandas.core.arrays.string_ import StringDtype