Starring in a Broadway revival of a Pulitzer Prize-winning play would ordinarily be a pretty sweet gig, but I do not envy Amy Ryan. About a month ago, just as previews were set to begin for a new production of John Patrick Shanley’s “Doubt: A Parable,” with a stellar cast led by Liev Schreiber and Tyne Daly, it was announced that Ms. Daly had to withdraw for health reasons and would be replaced by Ms. Ryan.