Time-series related bugs

Created by: Dreamlone

Some bugs arised during time series benchmark experiments (the post will be updated periodically):

OptimisationTimer - Composition time: 1.8 min
Exception "no default __reduce__ due to non-trivial __cinit__" raised. Skip time series temp for horizon 10.

Code to launch: https://github.com/ITMO-NSS-team/pytsbe/blob/fedot-upd/experiment_launch.py