[REDO] CLN: core/dtypes/cast.py::maybe_downcast_to_dtype  (#37126)
[REDO] CLN: core/dtypes/cast.py::maybe_downcast_to_dtype  (#37126)


gfyoung/pandas,datapythonista/pandas,dsm054/pandas,jorisvandenbossche/pandas,datapythonista/pandas,pandas-dev/pandas,gfyoung/pandas,dsm054/pandas,dsm054/pandas,dsm054/pandas,jreback/pandas,rs2/pandas,jreback/pandas,jreback/pandas,datapythonista/pandas,jreback/pandas,jorisvandenbossche/pandas,rs2/pandas,dsm054/pandas,pandas-dev/pandas,rs2/pandas,rs2/pandas,jorisvandenbossche/pandas,gfyoung/pandas,gfyoung/pandas,gfyoung/pandas,pandas-dev/pandas,jreback/pandas,jorisvandenbossche/pandas,datapythonista/pandas,pandas-dev/pandas