Just don’t know to be honest, its been shown since star wars 77 and especially over the last two movies that its really being changed and evolving on the move. ie:It really didn’t have an arc. Each movie is being written on the fly. I really think that’s why that scene was thrown on the end of Solo.
But what do I know?
I wouldn’t necessarily say that the sequel trilogy is being changed in between films. I believe that J.J. set up that Rey’s parents were nobody, and that is something that Rian Johnson carried over into The Last Jedi. I also think that J.J. intentionally also set up the romantic relationship being developed between Rey and Kylo Ren.