It’s a recurring thing where people claim they remember Luke trying and failing once or twice to throw the grappling hook, before finally getting it. Conversations sometimes get quite heated as people don’t like to hear that their memory might not be perfect. But there’s no evidence that such a thing was ever shown.

There were other examples around here of false theatrical memories, but I don’t recall the specifics.

Edit: Not sure about Darth Maul, though. If it really was produced for ratings purposes (which certainly seems plausible), perhaps there is footage out there that people have seen. Shown theatrically, though? The theatrical version certainly had the ‘cut in half’, rather than being specifically added for video.