Jamie Foxx and Sylvester Stallone’s Daughters, Corinne and Sistine, Costar in “47 Meters Down: Uncaged”

“I don’t think I fully thought it through,” said Corinne Foxx, 25, of accepting a starring role in Johannes Roberts’ shark thriller “47 Meters Down: Uncaged,” out today. “The director asked me, ‘What’s your swimming ability like?’ I said, ‘It’s…