“I make this decision having lost faith in the American legal system, where my unprotected testimony served as entertainment and social media fodder,” she said. — Amber Heard has agreed to settle the defamation case filed against her by Johnny Depp, she announced Monday. Heard lost the lawsuit against her ex-husband in June, with a jury finding she had libeled him when she wrote about being a domestic abuse victim in an op-ed, and was…