A hateful Nazi swastika that was hanging in plain view at a popular Upper East Side tailor shop has sparked fury among customers and neighbors. But the store’s management says the whole thing was a stich-up. Ignacio’s Tailor shop on East 60th Street issued a groveling apology, and told The Post an unwitting employee who didn’t understand what the symbol meant accepted the white shirt with a swastika armband for dry cleaning. 3 Jewish activist Lizzy Savetsky blasted the store for accepting the order to dry clean a swastika. X / @JulieMenin When managers were alerted to the garment they...