fix: use new problem constructor syntax

Author: AayushSabharwal

src/ModelingToolkit.jl

@@ -233,7 +233,7 @@ PrecompileTools.@compile_workload begin
     using ModelingToolkit
     @variables x(ModelingToolkit.t_nounits)
     @named sys = System([ModelingToolkit.D_nounits(x) ~ -x], ModelingToolkit.t_nounits)
-    prob = ODEProblem(structural_simplify(sys), [x => 30.0], (0, 100), [], jac = true)
+    prob = ODEProblem(structural_simplify(sys), [x => 30.0], (0, 100); jac = true)
     @mtkmodel __testmod__ begin
         @constants begin
             c = 1.0

src/linearization.jl

@@ -73,7 +73,7 @@ function linearization_function(sys::AbstractSystem, inputs,
     end
 
     prob = ODEProblem{true, SciMLBase.FullSpecialize}(
-        sys, op, (nothing, nothing), p; allow_incomplete = true,
+        sys, merge(op, anydict(p)), (nothing, nothing); allow_incomplete = true,
         algebraic_only = true, guesses)
     u0 = state_values(prob)
 

src/systems/callbacks.jl

@@ -959,8 +959,9 @@ function compile_equational_affect(
             u_getter = getsym(affsys, [sys_map[u] for u in dvs_to_update])
             p_getter = getsym(affsys, [sys_map[p] for p in ps_to_update])
 
-            affprob = ImplicitDiscreteProblem(affsys, [dv => 0 for dv in unknowns(affsys)],
-                (0, 0), [p => 0.0 for p in parameters(affsys)];
+            affprob = ImplicitDiscreteProblem(
+                affsys, Pair[unknowns(affsys) .=> 0; parameters(affsys) .=> 0],
+                (0, 0);
                 build_initializeprob = false, check_length = false, eval_expression,
                 eval_module, check_compatibility = false)