For a pop-cultural century, in words and images, Los Angeles has been depicted as a seductively alien locale not like any other place in the galaxy. Its natural disaster quotient, its sterling variety of photogenic backdrops for moral rot and a wide world of sleaze, the sun, the secrets – all of it spells camera-ready trouble in paradise. Its strangeness was made for, and by, film noir. Here’s one example: the Apple TV+ offering “Sugar,” starring Colin Farrell as a mysteriously well-off private eye specializing in missing-person cases. Creator and lead writer Mark Protosevich’s slippery fish o…