Have `ChpModel` make use of the new model states

[danielfeismann]

I noticed that the HpModel calls calculateNextState in the method calculateActivePower while the ChpModel doesn't. Since both are supposed to stateful maybe that should happen the same way in both models?

Originally posted by @t-ober in https://github.com/ie3-institute/simona/pull/82#discussion_r1168828892

[sebastian-peter]

I think the underlying problem is that ChpModel makes use of the mutable state of MutableStorage, while it should be converted to use ThermalStorageState like HpModel does. After solving this, MutableStorage and related deprecated functionality should be removed. So to me, this issue is valid, although currently not at a high prio.