It's a basic property of polycarbonate though, it has a very sharp cut-off in transmission around 400 nm. For ordinary applications this is rarely noticeable, certainly not to how things look (it doesnt have a yellow tint or anything like that).
One practical difference is that you cannot get a sun tan (or burn) through polycarbonate windows, while you can through ordinary float glass ones. This could happen for example in a car with strong sunlight from the side (the windshield usually is a laminate construction that blocks most uv, side windows are usually tempered glass that does not block it that well).
As for doing it on purpose: I suppose some companies will offer blue-limiting filters, probably at a premium price, just as they do anti-glare and scratch resistant coatings.
Plain polycarbonate glasses block UV, so do high-index (extra thin) glasses. Nothing can be done about this since it's just a material property, apart from getting glasses that are made out of actual glass (quite rare these days).