REF: use should_extension_dispatch for comparison method (#27912)
REF: use should_extension_dispatch for comparison method (#27912)

* REF: implement should_extension_dispatch
pandas-dev/pandas,TomAugspurger/pandas,datapythonista/pandas,rs2/pandas,dsm054/pandas,TomAugspurger/pandas,jorisvandenbossche/pandas,jreback/pandas,gfyoung/pandas,pandas-dev/pandas,jreback/pandas,jorisvandenbossche/pandas,dsm054/pandas,jreback/pandas,gfyoung/pandas,jreback/pandas,pandas-dev/pandas,rs2/pandas,datapythonista/pandas,TomAugspurger/pandas,datapythonista/pandas,gfyoung/pandas,jorisvandenbossche/pandas,datapythonista/pandas,TomAugspurger/pandas,gfyoung/pandas,rs2/pandas,jorisvandenbossche/pandas,dsm054/pandas,gfyoung/pandas,dsm054/pandas,jreback/pandas,dsm054/pandas,pandas-dev/pandas,rs2/pandas