fix: handle new guesses type in initprob generation

Author: AayushSabharwal

src/systems/problem_utils.jl

@@ -1162,7 +1162,7 @@ function maybe_build_initialization_problem(
         nothing
     end
     meta = InitializationMetadata(
-        copy(op), copy(guesses), Vector{Equation}(initialization_eqs),
+        copy(op), anydict(copy(guesses)), Vector{Equation}(initialization_eqs),
         use_scc, time_dependent_init,
         ReconstructInitializeprob(
             sys, initializeprob.f.sys; u0_constructor,