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 never want to see Domingo again. Most of the material over at Studio 8H these days favors a wacky, coked-up premise over structure or payoff. Nothing is smart. Scenes usually fall off a cliff.   Meanwhile in London, the far superior version with an accent has been consistently enjoyable from start to finish. Often it’s phenomenal.…