fix: do not unwrap initials in initializeprobpmap

Author: AayushSabharwal

src/systems/problem_utils.jl

@@ -877,7 +877,7 @@ function construct_initializeprobpmap(
     @assert is_initializesystem(initsys)
     if is_split(sys)
         return let getter = get_mtkparameters_reconstructor(
-                initsys, sys; initials = true, unwrap_initials = true, p_constructor)
+                initsys, sys; initials = true, unwrap_initials = false, p_constructor)
             function initprobpmap_split(prob, initsol)
                 getter(initsol, prob)
             end