I kind of feel like, even though Tony specifically told Hulk to only bring back those lost in the snap, the world (and universe) has actually been restored to a version of itself before the snap. Tony also said, "Don't change anything else", which kind of contradicts that but I think there's enough leeway between those two instructions and Hulk's actions to think that he subtley shunted time about so that maybe things aren't much different than they were before the snap.
I honestly don't expect anything to come up that really addresses any of it; they'll refer to it as "the other incident", or something, maybe mention that the world has moved on, but mostly just get one with things as though it's all normal and sorted now.
I do think it would have been better to have reversed the snap completely though because then Tony's sacrifice would be even more heart-wrenching; plus, the film could've ended with Petter discovering she was pregnant or something.