Okay, I'm going to be weird about this:
I remember those lines too! They're not on the DVD/Home release? (I watched this movie two or three times in total, didn't read the novelization, script or anything else though).
I especially remember the "and you never will"-part, because I thought that was pretty stupid back then - they're literally on the same bus to become classmates at that very moment!
And I feel like I heard the "looks like you"--part, too, because at that these lines I always try to check if they managed to film a real baby/puppet/3-months old baby/how close it
atually resembles the actors.

.
Sidenote: I watched the theatrical version, in englisch, in a German theater. So who knows.
But yeah, snippets and weird cuts between movies/home versions happen quite more than one might imagine - film cutting is usually an ongoing process until the last minute before (or sometimes after) release (there's like literally even 4 or 5 different cuts of the original Star Wars just from 1977 alone!). But usually the differences are SO miniscule, no one catches them. Like this one - I would have never noticed. I'm actually not 100% sure myself. But I lean more towards "you didn't imagine that, because I remember that, too", than "collective Mandela effect" (but could be that, too - the more I think about it, the less sure I become).