fixup! feat: add LinearizationProblem

Author: AayushSabharwal

src/linearization.jl

@@ -576,7 +576,11 @@ function linearize(sys, lin_fun::LinearizationFunction; t = 0.0,
     op = anydict(op)
     evaluate_varmap!(op, unknowns(sys))
     for (k, v) in op
-        setu(prob, k)(prob, v)
+        if is_parameter(prob, Initial(k))
+            setu(prob, Initial(k))(prob, v)
+        else
+            setu(prob, k)(prob, v)
+        end
     end
     p = anydict(p)
     for (k, v) in p