Actress Melissa Joan Hart, 45, blamed unmasked children for her Covid ‘breakthrough’ diagnosis in a deranged rant this week. The “Sabrina the Teenage Witch” actress is fully vaccinated and told her 1.6 million Instagram followers that she likely got Covid because her kids don’t have to wear masks at school in Nashville. “I got COVID. I am vaccinated, and I got COVID, and it’s bad,” Hart said. “I just really hope my husband and the other ones don’t get it because if someone has to be taken to the hospital, I can’t go with them,” she said. She continued: “I’m...