Bug during multivariate time series composing

Created by: Dreamlone

During solving multivariate time series forecasting the following error arised:

ValueError: Graph has cycle

FEDOT version: current master (4th of June 2022). The same for version 0.5.2 from pip Code for launch: https://github.com/ITMO-NSS-team/pytsbe/blob/bug/cases/fedot_simple_multivariate.py (branch bug)

Estimated deadline - 10/06/2022