fix: specialize on deriv type in default_ode_interpolant

same old same old

Author: asinghvi17

lib/OrdinaryDiffEqCore/src/dense/generic_dense.jl

@@ -177,8 +177,8 @@ end
 end
 
 function default_ode_interpolant(
-        Θ, integrator, cache::DefaultCache, alg_choice, idxs, deriv
-    )
+        Θ, integrator, cache::DefaultCache, alg_choice, idxs, ::Type{deriv}
+    ) where {deriv}
     if alg_choice == 1
         return ode_interpolant(
             Θ, integrator.dt, integrator.uprev,
@@ -222,8 +222,8 @@ end
 
 @generated function composite_ode_interpolant(
         Θ, integrator, caches::T, current, idxs,
-        deriv
-    ) where {T <: Tuple}
+        ::Type{deriv}
+    ) where {T <: Tuple, deriv}
     expr = Expr(:block)
     for i in 1:length(T.types)
         push!(