Film: “Triangle of Sadness” with Woody Harrelson

What would happen if you were suddenly marooned on a remote island with 7 other strangers? And most of you had no life skills or means of survival?

This is not the plot of “Gilligan’s Island” but just one of the many events that beset the main players in “Triangle of Sadness,” Ruben Ostland’s acute, devastating satire of the 1 percent of the 1 percent.

Wh…