Piers Morgan isn’t bothered by the commotion following his public criticism of Meghan Markle, sources confirm to Page Six. The bombastic Brit revealed he was forced to leave his job on “Good Morning Britain” because he wouldn’t apologize to Markle for disbelieving her claims about her mental health, but a source who knows him tells Page Six he isn’t concerned and “thrives on the uproar.” Morgan, 55, stormed off the set of the British talk show earlier this week following an on-air clash with colleague Alex Berenson over Markle and Prince Harry’s interview with Oprah Winfrey. UK broadcaster ITV later...