Former Nickelodeon star Melissa Joan Hart is sharing her two cents after the debut of Quiet on Set: The Dark Side of Kids TV. In the docuseries, several child stars alleged the network did nothing to protect them from Dan Schneider’s toxic work environment, while Drake Bell revealed he was sexually assaulted by a producer. Hart, 47, discussed the situation on a new episode of the “Meghan McCain Has Entered the Chat” podcast, noting of the actors’ claims, “I absolutely trust them, believe them, one hundred percent.” The mom-of-three — who starred on the network’s Clarissa Explains It All from 1…