Declaring Melania Trump “betrayed her Catholic faith” and calling on her to repent, a Christian activist running as a third-party candidate for president urged his followers to boycott the former first lady’s upcoming book. This declaration came after the former first lady stunned the political world when she broke with her husband former President Donald Trump on a key campaign issue: abortion rights. “Boycott her useless book, and call on her to repent,” Constitution Party presidential nominee Randall Terry wrote in a social media post on X that was followed up Friday by a statement. “It cau…