Eric Trump attended his father’s trial in the hush money case involving adult film actress Stormy Daniels, and a courtroom observer described what she saw as a “sad” spectacle. Former President Donald Trump is facing a criminal trial on charges of falsifying business documents to conceal payments to the adult film star to prevent her from telling voters in 2016 about their alleged extramarital affair, and MSNBC legal analyst Lisa Rubin told “Morning Joe” about the atmosphere Tuesday in the courtroom after the trial resumed. “I will tell you where I sat in the overflow room yesterday, Donald Tr…