In my mind, if there was a plan to make Carrie Fisher’s Leia “The Last Jedi,” then it feels extremely likely there was footage shot that implied the general was a Jedi. I could be wrong, but considering there was no indication of this in the prior trilogy, Leia being a Jedi just feels like one of those reveals you couldn’t really hold off. Remember, people flipped when Leia used the Force to fly through space in The Last Jedi.
Article source: https://www.cinemablend.com/news/2484383/why-leia-being-a-jedi-would-be-good-for-star-wars