fix: handle array guesses in InitializationProblem

Author: AayushSabharwal

src/systems/diffeqs/abstractodesystem.jl

@@ -1311,7 +1311,11 @@ function InitializationProblem{iip, specialize}(sys::AbstractODESystem,
         u0T = promote_type(u0T, typeof(fullmap[eq.lhs]))
     end
     if u0T != Union{}
-        u0map = Dict(k => symbolic_type(v) == NotSymbolic() ? u0T(v) : v
+        u0map = Dict(k => if symbolic_type(v) == NotSymbolic() && !is_array_of_symbolics(v)
+                         v isa AbstractArray ? u0T.(v) : u0T(v)
+                     else
+                         v
+                     end
         for (k, v) in u0map)
     end
     if neqs == nunknown