add cache for plain stress call

Author: lijas

src/wrappers.jl

@@ -28,7 +28,7 @@ function material_response(
     Δε::AbstractTensor{2,d,T},
     state::AbstractMaterialState,
     Δt = nothing;
-    cache = nothing,
+    cache = get_cache(m),
     options = Dict{Symbol, Any}(),
     ) where {d,T}