M. Night Shyamalan’s unconventional superhero flick, “Glass,” comes on the heels of what’s arguably the strongest year ever for comic-book movies. Out of the gate, “Glass” is cooking with gas, proving it has the street cred to hang with “Black Panther,” “Spider-Verse,” “Avengers: Infinity War,” etc. Then after about an hour, the writer-director loses his grip.He’s clearly on a mission to shatter [...]