propagate the cached reorder_parameters to the SCC subsystems

[KristofferC]

Takes ODEProblem construction on a somewhat large model from

7.796214 seconds (137.43 M allocations: 5.137 GiB, 10.10% gc time)

to

6.921406 seconds (108.02 M allocations: 4.142 GiB, 13.60% gc time)