Can a state refuse to recognize challenges to the accuracy of a jury's determination of 'future dangerousness' as cognizable grounds for postconviction review?

QUESTIONS PRESENTED When a state conditions a capital defendant’s eligibility to be sentenced to death on a jury’s determination of “future dangerousness,” can the state refuse to recognize challenges to the accuracy of the jury’s determination as cognizable grounds for postconviction review? Does it violate the protections of the Eighth and Fourteenth Amendments to the United States Constitution to execute an individual who does not meet the eligibility criteria for a sentence of death under state law? i