Apple has an undisclosed multilingual gray list of tens of thousands of words and phrases that its iOS keyboard will not autocomplete or swipe-type, a researcher said on Friday.The list is not a ban. iPhone users can still type what they like when drafting emails and texts. But the words on the list will not be suggested to users via autocomplete or swipe-typing in most cases, opening a window into how Apple manages the tradeoff between preventing its devices from offering offensive or politically charged suggestions to users and anticipating what they are trying to say.Hundreds of millions of people…