Live from New York it’s . . . the second-best “Saturday Night”? It makes me feel for-Lorned to say it. But “SNL UK,” the brand-new British counterpart to the 51-year-old American sketch-comedy series is, frankly, kicking NYC’s arse . I watch both shows every week — UK airs here Sundays on Peacock — and the pattern is clear.  On NBC, if we’re lucky, there’s one solid sketch showcasing breakout Ashley Padilla. Marcello Hernández is going to be an Adam Sandler-level movie star, 100 percent, but I