[refactor] #4378: Transactional trigger set

[Erigara]

Description of the Change

As for WSV, make trigger set make trigger set transactional.

Issues

Closes #4378

Benefits

For large amount of triggers and frequent trigger execution transactional model allow not to clone trigger set all the time saving time and space.

Possible Drawbacks

Might be not so efficient when there is small amount of triggers.