Pandas CI/TST: Avoid xfail(strict=False) in test_round_sanity

Patched in https://github.com/pandas-dev/pandas/pull/47803

Comment From: mroeschke

Again made less strict in https://github.com/pandas-dev/pandas/pull/48245. Would be good to investigate if https://github.com/pandas-dev/pandas/issues/47933#issuecomment-1205909274 can be implemented to avoid the strict=False

Comment From: mroeschke

Looks to have been removed so closing