review all such cases where safe type conversion requires `dynamic_cast` and get rid of downcasting as far as possible.

We agreed to avoid using `dynamic_cast` because of possible performance overhead. I revoke all the affected comments.
Other hand, "need of dynamci_cast is a signal that something is wrong in the code and design.
We need to review all such cases and get rid of type downcasting as far as possible.

_Originally posted by @SunFellow in https://github.com/epam/Indigo/issues/423#issuecomment-879998306_