The parents of a 3-year-old who died after heart surgery at North Carolina Children’s Hospital in 2016 are suing the institution, saying it failed to disclose internal concerns about the quality of its care. Tasha and Thomas Jones, the parents, also allege that doctors didn’t warn them about problems with the heart surgery program, and “instead chose to protect their own reputational and monetary interests” by continuing to refer patients to the Chapel Hill hospital, according to a complaint filed on Thursday in North Carolina state court.