I think you're giving Trolls, Migration, and even Wonka a bit too much credit.
With Trolls, we really only have the first film for comparison, it made $347M worldwide. As for the second it only made a muted $48M before leaving theaters due to the pandemic, but its been reported it made $150M in digital rentals, for grand total of $198M. So its not the juggernaut you're making it out to seem based on its previous outings. We'll see how the third one will do.
As for Migration, its an unknown as its a new property, but it comes out a whole month after Wish. So given most movies are front-loaded these days Wish would have made a bulk of its box office by the time Migration would even see its first $1. So its not any real competition for the box office.
And with Wonka, this is the third iteration of Wonka, we'll see if there is an audience for a 3rd go around after the Depp version. It also comes out 2 weeks after Wish, so a bit of competition, but just like Migration not a real threat if Wish has made a bulk of its money in the first two weeks.
Wish, as long as it lives up to its billing of a return to more traditional Disney Animation, should do fine.