Dial of Destiny bombed and that didn't seem to have any impact on their decision to retheme Dinosaurs to Indy.
Besides, Mufassa is coming out this year, any new ride would be 2026 or 2027 (well after any residual effects from Mufassa). If anything, I could see some synergy from the announcement of this ride at D23 (in August) being used to drive interest in the movie (as opposed to the other way around). It's the 30th anniversary of the original film, the 5th anniversary of the live action remake... coupling that with a new ride announcement and a trailer for Mufassa and you have the nice buildings of a "Lion King" segment for D23... if the ride opens in 2027 (which is reasonable), you can then synergize the ride's opening with the Broadway show's 30th anniversary.